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Trevor Barry — the Outback Astronomer — is a world-renowned planetary imager whose backyard observatory in Broken Hill, NSW, produces scientific-grade Jupiter and Saturn data used by NASA. In this episode of Astrophiz, host Brendan O'Brien travels to the outback to sit down with Trevor at his custom-built observatory. Discover how a former mining tradesman built a 16-inch high-resolution planetary telescope with a 32-point mirror cell and Peltier-cooled optics — and why Broken Hill's flat outback terrain produces some of the best planetary seeing on Earth. From tracking Saturn's electrical storms for NASA's Cassini mission to winning the ASA Berenice and Arthur Page Medal and ALPO's Walter H. Haas Award, Trevor breaks down the exact capture, derotation and processing workflow behind his NASA-grade data. IN THIS EPISODE: -Introduction: Arriving in Broken Hill - From the Mines to the Night Sky: the "aha" moment - Building the First Telescope: storm water pipe & a trip into the roses - Why Broken Hill Delivers World-Class Seeing - Inside the Observatory: the 32-point mirror cell & Peltier-cooled optics - First Contact with NASA: discovering an electrical storm on Saturn - From Pretty Pictures to Scientific Data: capture & processing protocols - The Thrill of Discovery: Jupiter's real-time impact scar - A Dream Fulfilled: two nights on the twin Keck telescopes, Mauna Kea - Mission Control at JPL: meeting Dr Carolyn Porco - Advice for Amateurs: where to send your data - Earning Trust in the Professional Community - Looking Ahead: the 2028 total solar eclipse & Saturn's Great Vortex - The Golden Mic: sharing the wonder with the next generation Full transcript & images: https://astrophiz.com Trevor's book "Outback Astronomer": available online & in all good bookstores Trevor's 60 Minutes feature: tinyurl.com/trevorbarry Astrophiz is an independent, ad-free science podcast running since 2016. If you enjoyed this episode, please leave a review on Apple Podcasts or Spotify, or share it with a friend who loves the cosmos. #Astrophiz #TrevorBarry #PlanetaryImaging #Astrophotography #Saturn #Jupiter #NASA #Cassini #BrokenHill #Astronomy #OutbackAstronomer #JPL
There’s just one place to catch a wave outside Earth: Titan, the largest moon of Saturn. It’s the only other world in the solar system with bodies of liquid on its surface. And the waves there could reach heights of 10 feet. But future surfers will need to dress carefully; the surface temperature is almost 300 degrees below zero. Titan is half-again the size of Earth’s moon, and it has a dense atmosphere. Rain fills its lakes and seas with liquid methane, ethane, and nitrogen. The largest sea covers about 200,000 square miles – twice the area of all the Great Lakes combined. It could be several hundred feet deep. The Cassini spacecraft used radar to measure Titan’s ponds. It saw waves of no more than an inch or so high. But a recent study says the waves could get a lot bigger. Based on 20 years of observations of waves on Lake Superior, scientists built a computer model of how waves might work on other worlds. The model accounted for gravity, the pressure of the atmosphere, and the properties of the liquid. When the model was applied to Titan, it showed that even gentle breezes could whip up some big waves. But the waves would move more slowly than those on Earth – a slow-motion trip across the sea. Saturn looks like a bright star close to our moon the next couple of mornings. It’ll stand to the left of the Moon at dawn tomorrow, and the lower right of the Moon on Tuesday. Script by Damond Benningfield
Think Saturn was born with rings? Think again. Cassini data proved the iconic ring system formed only recently in Saturn's life. And in this video, we'll explore the brand-new 2026 research that explains exactly how it happened.▀▀▀▀▀▀Thanks to Displate for sponsoring this video. Use code ASTRUM at checkout for exclusive discounts on your order at https://displate.com/l/astrum. Get 22% off 1 Displate, 27% off 2 Displates, or 33% off 3 Displates. Not valid on Limited Edition Displates.▀▀▀▀▀▀Astrum's newsletter has launched! Want to know what's happening in space? Sign up here: https://astrumspace.kit.comA huge thanks to our Patreons who help make these videos possible. Sign-up here: https://bit.ly/4aiJZNF
Algumas das luas de Júpiter e Saturno têm sido objetos de interesse da astrobiologia há tempos. Novas missões estão a caminho para explorar alguns desses satélites e procurar condições de habitabilidade que podem estar em grandes oceanos debaixo da superfície. Aqui na Terra, o estudo de organismos que vivem e se reproduzem em ambientes considerados extremos, os extremófilos, pode ajudar a entender como a vida pode se adaptar a condições de temperatura extremamente baixa, entre outros estressores. Para tratar do tema, o repórter Danilo Albergaria conversou com as pesquisadoras Amanda Bendia e Maria Eduarda Nascimento, ambas do Instituto Oceanográfico da USP, Rosaly Lopes, da NASA e Douglas Galante, do Instituto de Geociências, também da USP. Este é o terceiro episódio de uma série produzida pelo Danilo, com apoio do Programa Mídia Ciência, da FAPESP. _________________ Roteiro Danilo: Nos dois primeiros episódios do podcast Oxigênio dedicados à astrobiologia, falamos da busca por vida em exoplanetas e em Marte. Desde os anos 60, Marte foi o objeto que mais capturou as atenções dos cientistas interessados em entender se a vida pode ter surgido e persistido em outros lugares do sistema solar. Mas esse panorama tem mudado nas últimas décadas. Desde as missões Galileo e Cassini, algumas das luas que orbitam Júpiter e Saturno entraram no rol de mundos com potencial de oferecer condições habitáveis à vida como a conhecemos. Novas missões espaciais estão a caminho ou em fase final de preparação para explorar algumas das luas dos gigantes gasosos. Entre os seus objetivos está entender melhor as potenciais condições de habitabilidade nos grandes oceanos debaixo da superfície dessas luas – ou seja, os cientistas querem saber se esses lugares oferecem condições suficientes para que seres vivos sobrevivam. Nesse episódio, eu entrevistei quatro cientistas que trabalham direta ou indiretamente com isso. Com eles, vamos explorar o que sabemos – e o que ainda não sabemos – sobre as luas geladas do sistema solar. Será que pode existir vida nesses lugares? É isso o que muita gente que pesquisa astrobiologia quer saber. [Vinheta] Danilo: Algumas das missões mais importantes da exploração espacial do presente e do futuro próximo estão destinadas às luas de Júpiter e Saturno. Vamos falar primeiro das que vão explorar a vizinhança de Júpiter. A sonda JUICE, acrônimo para “explorador das luas geladas de Júpiter” em inglês, foi lançada pela ESA (a agência espacial europeia) em 2023 para explorar Ganimedes, Calisto e Europa, três das quatro luas de Júpiter chamadas de galileanas. O quarteto foi observado pela primeira vez há mais de 400 anos por Galileu Galilei. A não ser pela nossa própria Lua, nenhuma lua do sistema solar é visível a olho nu. Galileu foi o primeiro a observar as luas de Júpiter usando um telescópio, invenção recente que tinha sido aprimorada por ele. As luas galileanas de Júpiter são relativamente grandes. Embora ainda sejam objetos bem menores do que a Terra, Ganimedes e Calisto são um pouco maiores do que a nossa Lua, enquanto a Europa é um pouco menor. A quarta lua, a Io – um verdadeiro inferno vulcânico, e que não estava no radar de estudos da missão de 2023 como as demais, é praticamente do mesmo tamanho da nossa Lua. A JUICE está a caminho do sistema joviano, ou seja, Júpiter e suas luas, mas ainda se encontra na vizinhança da Terra. Ela deve se aproximar de novo de nós para pegar embalo com a gravidade do nosso planeta, que vai estilingar a sonda para o sistema solar externo. A JUICE deve chegar aos arredores de Júpiter em julho de 2031. Outra sonda, a Europa Clipper, da NASA, foi lançada em outubro de 2024 para investigar, como o nome sugere, a lua Europa, a mais interessante das luas de Júpiter. A estilingada da Europa Clipper, ao passar perto da Terra, vai acontecer um pouco depois da passagem da JUICE – vai ser em dezembro de 2026, mas a Clipper deve chegar antes à vizinhança de Júpiter, em abril de 2030. A Clipper vai orbitar Júpiter e passar bem pertinho da superfície de Europa umas 50 vezes. Além das duas missões ocidentais, a China está planejando lançar uma sonda em 2029 para chegar a Júpiter em 2035 e explorar as luas Calisto e Ganimedes. Por que tanto interesse nessas grandes luas de Júpiter? Como eu já indiquei no começo do episódio, existem muitos indícios e evidências indiretas de que Europa, Calisto e Ganimedes têm enormes oceanos debaixo de uma espessa superfície gelada. A estimativa é de que cada uma dessas três luas tenha corpos de água líquida maiores do que todos os oceanos terrestres. Conversei sobre isso com o Douglas Galante, professor do Instituto de Geociências da USP e um dos pioneiros da astrobiologia no Brasil – ele é vice-coordenador do AstroLab, da USP, o primeiro laboratório dedicado à pesquisa em astrobiologia no país, fundado em 2011 por Douglas, pelo químico Fabio Rodrigues, atual coordenador do laboratório, e pelo Ivan Paulino-Lima, que hoje é pesquisador na NASA. Douglas: Uma coisa sempre interessante quando a gente pensa nessas luas geladas que eu sempre falo é que a gente adora falar que a Terra é o planeta água, algo que ficou popularizado, e a gente esquece de pensar que nessas luas de Júpiter e Saturno a gente tem mais água do que aqui na Terra. É em cada uma delas. Então a gente é muito presunçoso. Europa, os modelos mostram que ela pode ter um oceano de 100 quilômetros de profundidade. A gente não consegue imaginar o que são 100 quilômetros. O ponto mais profundo aqui na Terra, da Fossa das Marinas, são 11 quilômetros. Imagina 10 vezes mais. Danilo: Ganimedes, a maior lua de todo o sistema solar, deve ter um oceano seis vezes maior do que todos os oceanos da Terra combinados. Mas esses enormes corpos de água líquida não estão na superfície das luas, e sim debaixo de superfícies congeladas que podem chegar a centenas de quilômetros de espessura. Júpiter está cinco vezes mais distante do Sol do que a Terra, e o frio a essa distância do Sol impossibilita a existência de água líquida na superfície das luas. O Douglas chamou a atenção para o fato de que essas luas estendem possível habitabilidade para além da região em que a Terra orbita, mais próxima do Sol e que permite água líquida na superfície. Douglas: Mas o que eu acho super interessante, que eu sempre coloco, é que as luas dão um indicativo de habitabilidade que é maior do que a gente conhecia. Quando a gente olha os conceitos de habitabilidade tradicionais, que definem a zona de habitabilidade estelar, que é a presença de água líquida na superfície, as luas são ambientes crípticos que obtêm energia para manutenção da água líquida a partir da interação gravitacional com seus planetas hospedeiros. Danilo: Ok, mas se a superfície é gelada demais para ter água líquida, como esses oceanos podem existir? A explicação é a seguinte: o decaimento radioativo dos elementos que formam o núcleo das luas gera calor considerável de forma mais ou menos constante, parecido com o que acontece com o núcleo da Terra. Mas isso é só parte da explicação. Entra, então, o chamado “aquecimento de maré”. Conforme a lua se desloca na órbita do planeta gigante, a atração gravitacional do planeta não é uniforme: como a órbita não é circular, mas elíptica (ou “ovalada”), as luas às vezes estão um pouco mais perto e às vezes um pouco mais longe do planeta. Isso produz um efeito de “estica e puxa” que estica e comprime a lua, e isso gera calor entre as suas camadas internas. Também entra aí o fato de que as órbitas de Ganimedes, Io e Europa estão em ressonância, ou seja, enquanto a Io completa uma volta, a Europa completa duas, e a Ganimedes, quatro, o que aumenta a excentricidade de suas órbitas (ou seja, estica um pouco a elipse). Nesse processo, a própria variação na distância entre as luas gera uma interação gravitacional que contribui para o efeito de aquecimento de maré. Além disso, a provável presença de sais nos oceanos faz com que o ponto de congelamento diminua, mantendo a água em estado líquido. A JUICE e a Europa Clipper serão importantes para entender melhor as superfícies das luas e colher dados indiretos que indiquem algumas características desses oceanos, incluindo informações sobre se eles oferecem condições habitáveis para a vida como a conhecemos. Água líquida é uma das condições necessárias. Mas como os cientistas vão fazer para saber o que mais pode haver nesses oceanos? [Música] Danilo: Para entender como os cientistas vão fazer para saber mais sobre as luas geladas, eu conversei com a Rosaly Lopes, que é diretora de ciências planetárias do JPL, o Laboratório de Propulsão a Jato da NASA. Ela teve atuação importante na missão Galileo, que explorou as luas de Júpiter entre 1995 e 2003. Rosaly: Eu trabalhei na missão Galileo e a missão Galileo foi que descobriu que a Ganimedes e a Europa tinham oceanos de água líquida debaixo de uma crosta de gelo, principalmente Europa. Aí o pessoal fica muito entusiasmado porque Europa, nós sabemos que tem calor no interior, tem sinais de criovulcanismo, criovulcanismo é o vulcanismo que traz essa água líquida do interior para a superfície. E são três coisas essenciais para existir vida, vida como a nossa: água, energia, como calor, como vulcanismo, e material orgânico. Nós não sabemos muito sobre o material orgânico em Europa. Sabemos mais em Encélado e Titã, por exemplo. Eu também trabalhei na missão Cassini. Mas a missão que está indo agora para a Europa vai estudar justamente os depósitos da superfície para ver se é material orgânico ou não. Danilo: Encélado e Titã são luas de Saturno, e a Cassini foi a missão da NASA que explorou o sistema saturniano entre 2004 e 2017. Vamos falar delas daqui a pouco. Por ora, o que a Rosaly falou sobre possível criovulcanismo (ou vulcanismo gelado) em Europa é importante porque pode ser um dos mecanismos pelos quais parte do oceano do interior poderia ser expelida em enormes plumas de vapor de água e gelo. Não é algo completamente diferente de vulcões expelindo o magma do manto terrestre para a superfície. A Europa Clipper carrega instrumentos capazes de fazer medições que vão ser usadas para distinguir se essas plumas contêm material vindo do oceano profundo ou de pequenos reservatórios mais próximos da superfície. As pistas de criovulcanismo na superfície incluem anomalias de temperatura em determinadas regiões – mais quentes do que o esperado – além da presença de características que lembram fluxos de erupções ou de derretimento de geleiras aqui na Terra. Aliás, junto com a ausência de crateras de impacto de grande porte, isso indica que a superfície de Europa é jovem, devendo ter entre 50 e 100 milhões de anos. Em comparação, a superfície de Marte e da nossa Lua, formadas há bilhões de anos, tem muitas dessas grandes crateras, o que indica que a superfície não se renova. Ao examinar a superfície de Europa com a Clipper, os cientistas vão poder fazer inferências sobre seu interior. Mas a sonda não vai pousar na superfície da lua. Em vez disso, ela vai orbitar Júpiter e fazer 44 rasantes sobre Europa. Douglas: Na verdade, ela não vai nem orbitar a Lua, ela vai ficar fazendo flybys em volta da Lua, vai fazer rasantes na Lua, e quando ela faz esses rasantes, ela faz uma série de imagens de alta resolução, faz medidas espectroscópicas para medir a composição, mas ela não vai, de fato, acessar diretamente o potencial oceano líquido que existe ali debaixo. E daí todo mundo pergunta, mas porque a gente não simplesmente pousa na superfície da Lua, faz um furo, mede a água e vê o que tem ali e pega um atum europeano, sei lá. Então isso é uma coisa complicada, porque o oceano de Europa tem 100 km de profundidade. A crosta, a gente fala que é uma crosta fina, mas fina, de 10 km de espessura. A gente tem que lembrar que as calotas polares aqui no nosso planeta têm de 4 a 4,5 quilômetros de profundidade. Danilo: Pesquisadores estão explorando a potencial habitabilidade de oceanos de subsuperfície das luas analisando os seres vivos encontrados em condições muito adversas, extremas. A Amanda Bendia é professora do Instituto Oceanográfico da USP e coordenadora do ExtreMar, o Laboratório de Extremófilos Marinhos do instituto. Extremófilos são microrganismos capazes de viver em condições extremas e a Amanda é especialista em extremófilos marinhos de ilhas vulcânicas da Antártida. Lá existem fumarolas submarinas habitadas por micróbios adaptados a um ambiente com variação extrema de temperatura. Ela destaca o problema de conceber como microrganismos poderiam se adaptar às pressões muito altas que o oceano de Europa deve ter. Amanda: Aqui na Terra, falando de extremófilos, a gente já encontrou vida nos mais extremos possíveis, desde a profundidade máxima do oceano até a mais alta atmosfera. Só que a profundidade máxima do nosso oceano é perto de 11 quilômetros, que fica naquela região das fossas marianas. Em Europa, é estimado que o ponto mais fundo seja ali perto de 100 quilômetros, então é 10 vezes quase mais profundo do que a nossa maior profundidade. Então, é um desafio a gente tentar entender como uma forma de vida ali poderia sobreviver a uma alta pressão como essa. Danilo: A Maria Eduarda Nascimento é doutoranda orientada pela Amanda, também no Instituto Oceanográfico da USP. A pesquisa dela envolve criar modelos computacionais para entender como possíveis comunidades de microrganismos poderiam subsistir no interior de oceanos de subsuperfície de luas geladas por meio de quimiolitoautotrofia – que é um nome sofisticado para descrever como alguns micróbios aqui na Terra se alimentam de compostos inorgânicos – como minerais e rochas – sem precisar de oxigênio e da luz do Sol. Os oceanos das luas geladas podem estar em contato com um interior quente e isso, dependendo dos elementos e compostos disponíveis, pode sustentar vida microbiana quimiolitoautotrófica. A gente vai falar disso daqui a pouco, porque a Maria também conversou comigo sobre alguns dos instrumentos da Europa Clipper. Maria: Ela tem o REASON, que é um radar para ver o quão grande é essa crosta de gelo e a estrutura. Ele tem um magnetômetro que é pela deformação no campo magnético que a gente sabe que tem um oceano, que a água salgada do mar acaba mexendo nesse campo eletromagnético, que a gente sabe que os elétrons da água salgada criam essa deformação no campo. Então a gente tem esse, que daí vai dizer quanto profundo é, vai dizer quão realmente muito profundo é. Qual é a salinidade? Vai ter um espectrômetro de massa também na Europa Clipper, então vai analisar esses gases na atmosfera por espectrometria. Danilo: A Clipper não vai ter como procurar diretamente por sinais de vida, buscando bioassinaturas, mas vai ser capaz de colher dados que vão poder indicar se o oceano é habitável ou não. Morando há décadas nos Estados Unidos, a Rosaly fala das bioassinaturas no inglês, biosignatures. Ela também falou sobre alguns dos instrumentos da Europa Clipper. Rosaly: Tem um que nós chamamos MASPEX, que é um espectrômetro de massa. Ele vai poder analisar gases perto de Europa. Se tiver pluma trazendo material do interior, isso vai ser uma beleza. Se não tiver pluma, aí depende de quanto material deve ter saído do interior. Também tem um Surface Dust Analyzer, que pode analisar partículas de poeira, dust é poeira. E existem sempre em todos os planetas e luas pequenos impactos de micrometeoritos e que estão colocando para fora partículas da superfície de Europa. Então, esse instrumento vai analisar a composição dessas partículas. E também, se tiver pluma no interior, colocando material para a superfície, também esse instrumento vai ser muito importante. Nós vamos saber, por exemplo, mais sobre a espessura da crosta de gelo, se tem plumas trazendo material do interior para a superfície, se tem depósitos dentro da crosta de gelo que são, digamos, líquidos, que em vez de estar abaixo no oceano, estão mais perto da superfície. Está saindo algum material e nós sabemos que tem composição e cor diferente em umas regiões que chamam de Chaos Terrains, regiões caóticas, onde mais material veio do interior. E poder analisar a composição desse material, se tem material orgânico ou não. Então, [a sonda] vai também nos dizer muito mais sobre a lua Europa. Mas não é uma missão para detectar a vida, nem biosignature. Danilo: Diferentemente da Clipper, a JUICE (lançada pela ESA, a agência espacial europeia) não vai prospectar somente Europa, mas também Ganimedes e Calisto. Na verdade, o foco principal da missão da agência espacial europeia é a maior lua de todo o sistema solar, Ganimedes, a única que tem campo magnético próprio. A sonda vai orbitar essa grande lua, mirando entender sua estrutura interna, buscando mais informações sobre a extensão de sua crosta gelada, o volume de seu oceano, e caracterizar seu campo magnético. A sonda também vai fazer rasantes sobre Europa e Calisto para identificar locais mais interessantes para o pouso de futuras missões. O objetivo declarado da missão é entender as condições de habitabilidade oferecidas pelas três luas jovianas. Mas, claro, as luas de Júpiter não são as únicas que interessam para a astrobiologia. [Música] Danilo: Orbitando Saturno estão dois mundos que vêm chamando a atenção dos pesquisadores interessados na busca por vida fora da Terra há décadas: Titã e Encélado. Titã é a maior lua de Saturno – no sistema solar, ela só é menor do que a Ganimedes. Vamos falar de Titã daqui a pouco. Encélado é uma lua pequena – ela ainda tem tamanho mais do que suficiente para, com a própria gravidade, ter se tornado um objeto redondo, mas tem 15% do diâmetro da nossa Lua. A superfície dela, congelada, quase inteiramente branca com detalhes azulados, foi observada de perto pela primeira vez em 1980 e 81 quando as sondas Voyager visitaram o sistema saturniano. Se já era intrigante, Encélado se tornou um dos objetos mais interessantes do sistema solar com os indícios de que ela, também, possui um oceano de subsuperfície. A sonda Cassini, que começou a explorar o sistema de Saturno em 2004, observou Encélado ejetando plumas de materiais que devem compor esse oceano. Em três oportunidades, em 2008, 2012 e 2015, a Cassini deu rasantes – a uns 50 quilômetros de distância da superfície de Encélado – passando pelas plumas para analisar o que tinha ali. A Rosaly, que trabalhou na missão, falou um pouco sobre os achados. Rosaly: Encélado, o que é muito interessante é que esse líquido está em contato direto com o interior, a crosta do interior, porque foram detectados sais na pluma. Então, quer dizer que esse material está vindo direto do oceano. E nós sabemos que o oceano está em contato com o interior, que tem material orgânico também, sílica. Então, esse material está vindo direto do oceano até a superfície e você pode, digamos, colher esse material, voar pela pluma e colher o material. Danilo: Com a Cassini, descobrimos indícios de que o oceano de Encélado tem materiais orgânicos e os seis elementos químicos essenciais para a vida: carbono, hidrogênio, oxigênio, nitrogênio, fósforo e enxofre. Eu também pedi para a Amanda explorar um pouco mais o que sabemos do oceano de Encélado a partir das plumas. Ela vai mencionar algo muito importante: as fontes hidrotermais. Amanda: lá em Encélado é legal que tem umas plumas que são ejetadas em direção à superfície. E aí a Cassini passou de rasante nessas plumas que ficam geralmente ali no Polo Sul, de Encélado, e detectaram partículas de sílica. Esse tipo de partícula só poderia ser formado em temperaturas altas. Então, eles começaram aí uma discussão de que teriam fontes hidrotermais no fundo do oceano de Encélado. Isso é muito entusiasmante, porque a vida aqui na Terra, uma das grandes hipóteses, que é uma das mais aceitas pela comunidade científica, é que a vida teria se originado em fontes hidrotermais do oceano primitivo da Terra. Porque tem todos esses componentes químicos que geram um gradiente químico. A vida poderia obter energia, produzir energia a partir desse gradiente. Danilo: Até a década de 1970 ninguém sabia da existência das fontes hidrotermais no fundo dos oceanos terrestres. A crosta terrestre tem fissuras. Quando essas fissuras estão no assoalho oceânico, a água entra em contato com o magma próximo, o que gera verdadeiras chaminés, fumarolas. Nessas fontes, na escuridão do fundo oceânico, ecossistemas inteiros existem graças a microrganismos que conseguem produzir sua própria matéria orgânica a partir de substâncias inorgânicas, como compostos de enxofre, nitrogênio e ferro. A Amanda e a Maria falaram um pouco deles. Amanda: Tem não só micro-organismos bem específicos desses ambientes, mas até animais associados, porque os microrganismos sustentam a vida nesses locais, porque eles fazem um tipo de metabolismo que chama quimiossíntese. Que é um tipo de metabolismo que a gente tem todas as evidências de que era o metabolismo das primeiras formas de vida que existiram aqui. Eles conseguem obter energia a partir desses compostos químicos à base de enxofre, por exemplo. E aí, a partir dessa energia, eles conseguem fixar o CO2, que nem as plantas fazem a partir da luz. Fixam CO2 para produzir as moléculas orgânicas, eles conseguem, a partir da energia dessas rochas, desses compostos inorgânicos, fixar esse carbono e produzir, sintetizar essas moléculas orgânicas, então são produtores primários do fundo do oceano que sustentam a vida nesse oceano profundo. Então essas fontes hidrotermais são como se fossem oásis para essa vida de ambiente extremo em mar profundo. Maria: Eles estão lá respirando nitrogênio, respirando ferro, outros elementos. Então eles demonstram que essas similaridades, considerando o tempo também, por exemplo, Enceladus acredita que esse oceano esteja mais ou menos presente há um bilhão de anos, é tempo para a vida conseguir se adaptar a esse ambiente. Então, é plausível imaginar que se a gente tem um substrato quimiossintético, como por exemplo para a nossa vida aqui nas fontes hidrotermais, é plausível a gente imaginar que nesses outros mundos, onde existem essas condições alienígenas parecidas com o que a gente tem aqui, também exista vida. Danilo: Além disso, o metano está entre os materiais orgânicos detectados em Encélado. Isso é mais um motivo para entusiasmo com o potencial de habitabilidade do oceano de Encélado. Amanda: Mas o legal do metano é que eles viram que provavelmente naquela camada fria de gelo tem clatrato de metano nas fissuras. Porque tem vários modelos que mostram a formação desse tipo de clatrato de metano, que são moléculas de metano que em volta tem moléculas de água congeladas, resumindo. E aqui na Terra a gente tem condições de oceano profundo e de subsuperfície pela alta pressão. Em temperatura baixa, a gente também tem hidrato de metano, que é abundante em algumas regiões de mar profundo, em subsuperfície. E aí, aqui na Terra, a gente tem nessas regiões de subsuperfície, eventualmente esse clatrato de metano pode vir mais em direção à superfície e exsudar esse metano. E a gente tem uma rica diversidade de arqueias que conseguem utilizar esse metano, arqueias e bactérias também, mas a gente vê que tem especificamente arqueias que conseguem metabolizar esse metano, consumir esse metano, são chamadas de metanotróficas. E aí é um grupo que hoje a gente já sabe que está espalhado na Terra, em todas as regiões de exsudação de metano, e que é muito adaptado a conseguir… Utilizar esse metano para obter energia nesses ambientes. Então a gente sabe que o metano também é um indicativo superlegal como uma fonte de energia para um possível metabolismo metanotrófico. [Música] Danilo: Eu não consigo decidir qual dessas luas é a mais interessante, mas eu sei que primeira a ter despertado minha curiosidade desde que li o livro Pálido Ponto Azul, do astrônomo Carl Sagan, é Titã. Então, vamos, finalmente, falar dela, a maior lua de Saturno. Titã foi observada pela primeira vez pelo astrônomo holandês Christian Huygens, com um telescópio que ele mesmo projetou, em 1655. Essa, que é a segunda maior lua do sistema solar, tem uma característica muito peculiar: Titã tem uma atmosfera muito espessa, e é tão densa que a pressão atmosférica em sua superfície é 50% maior do que a da Terra. Quando a sonda Voyager 1 passou pelo sistema saturniano em 1980, pela primeira vez os seres humanos puderam ver que a atmosfera de Titã oculta a superfície no espectro da luz visível. A Voyager também conseguiu caracterizar a atmosfera, composta principalmente de nitrogênio, com traços de metano e a presença de algo que vem semeando a imaginação de muita gente: moléculas orgânicas complexas. A sonda Cassini levou consigo um módulo nomeado em homenagem ao Christian Huygens. Quando a Cassini chegou perto de Titã, ela soltou a Huygens em direção à lua. Em janeiro de 2005, a Huygens desceu pela atmosfera muito densa de Titã, abriu um paraquedas e pousou. Por pouco mais de uma hora, a Huygens conseguiu fazer imagens da superfície, confirmando uma suspeita antiga dos astrônomos: como a Terra, Titã tem líquido estável na superfície. Mas não é água. Com temperatura média por volta de 180 graus Celsius negativos, a superfície de Titã tem lagos de hidrocarbonetos, ou seja, matéria orgânica. São lagos de metano e etano em estado líquido. Chove metano em Titã. Como? O Douglas explica. Douglas: Nessas temperaturas, o etano e o metano que fazem a atmosfera já conseguem ser condensados. Todo mundo já viu aqui um botijão de cozinha, de butano, butano propano, que dentro do botijão o gás está líquido. Você abre a torneirinha ali, a mangueira, sai líquido. E ele prontamente, quando chega na atmosfera, ele expande e forma gás. Então, quando você comprime gases, eles podem condensar e se tornar líquidos. Eles mudam de fase. A mesma coisa acontece lá. Com a alta pressão lá, a pressão é duas vezes a pressão aqui da Terra. E baixa temperatura, eles condensam, formam líquido. Então, ela tem oceanos, rios, lagos de metano e etano. E lentamente esse metano e etano vão evaporando, indo para a atmosfera. Na alta atmosfera eles se condensam de novo e formam nuvens. E essas nuvens podem chover ou nevar metano e etano. Então você tem um ciclo hidrológico, metanológico, completo de ciclagem de metano e etano na superfície. Danilo: Quando esse material orgânico abundante em Titã interage com a radiação ultravioleta do Sol, ela forma polímeros orgânicos – moléculas compostas de cadeias muito extensas de carbono e hidrogênio. O Sagan deu o nome de tolinas para essas macromoléculas orgânicas muito abundantes em Titã. Douglas: Além disso, tem essas tolinas que formam hidrocarbonetos mais complexos. Por isso que normalmente o próprio [Carl] Sagan dizia isso: Titã pode não ser o melhor lugar para a vida como a gente conhece, mas pode existir alguma coisa de vida como a gente não conhece. Acima de tudo ela é um excelente laboratório de química prebiótica, porque você tem esse monte de moléculas orgânicas se formando, se complexificando e interagindo que pode dar os primeiros passos. Então grande parte das missões para ir para Titã ou para estudar Titã estão relacionadas com essa parte de química prebiótica. Esse é o principal argumento. Mas a própria missão que talvez vá em 2028, a Dragonfly, ela tem a proposta de procurar as duas coisas, de procurar resquícios, presença de água líquida, porque existe alguma água na superfície, mas normalmente na forma de gelo, ela vai buscar esse gelo e buscar por eventuais sinais de vida como a gente conhece, vida baseada em célula, coisas que a gente conhece. Danilo: A Dragonfly é uma missão da NASA em fase final de preparação. É uma espécie de drone do tamanho de um carro pequeno que vai explorar Titã. Deve até mesmo ser capaz de fazer pequenos voos pela atmosfera da lua. O lançamento da Dragonfly está previsto para julho de 2028 e a ela deve chegar em Titã em 2034. O que ela poderia encontrar lá, que seja de interesse astrobiológico? Será que Titã não poderia ter algum tipo de vida muito diferente da terrestre, com um maquinário bioquímico diferente? Douglas: A gente não conhece nada aqui na Terra que viva e que tenha metabolismo nessas temperaturas baixas, mas é cogitado. A Dragonfly também vai procurar por indícios de vida como a gente não conhece, algum desequilíbrio químico, alguma bioassinatura termodinâmica que possa indicar algum tipo de vida como a gente não conhece. Danilo: Procurar pelo tipo de vida que a gente conhece, a terrestre, já é um desafio – se é que algo do tipo da vida terrestre existe fora da Terra. Um desafio ainda maior é procurar por vida como a gente não conhece. Tem muita coisa que a gente não sabe sobre a própria vida terrestre – como ela surgiu, por exemplo. Mas isso é o que sabemos que não sabemos – em outras palavras: é o desconhecido conhecido. Quando falamos em vida como não conhecemos, deve haver um espaço ainda maior de possibilidades que ignoramos e que nem sequer conseguimos conceber. É uma forma de ignorância dupla: nem sequer sabemos o que não sabemos. No próximo episódio, vamos voltar para a nossa vizinhança do sistema solar e olhar para um planeta gêmeo da Terra: Vênus. Ambos têm praticamente o mesmo tamanho, mas Vênus é um verdadeiro inferno, com uma superfície quente a ponto de derreter chumbo. Seria possível haver qualquer coisa viva lá? Na superfície, muito provavelmente não. Mas nas nuvens mais altas, a temperatura é bem mais amena. Em 2020, cientistas alegaram ter detectado fosfina, que aqui na Terra é produzida por seres vivos, uma possível bioassinatura nas nuvens altas de Vênus. Isso reacendeu o interesse astrobiológico no nosso vizinho infernal e novas missões estão em desenvolvimento para explorar a atmosfera ultradensa de Vênus. A pesquisa, o roteiro, a produção e a narração foram feitas por mim, Danilo Albergaria. A revisão do episódio foi da Simone Pallone, coordenadora do Oxigênio. A edição de áudio é do Guilherme Lopes, aluno do curso de Midialogia e estagiário da Coordenadoria de Centros e Núcleos Interdisciplinares de Pesquisa, a Cocen. As vinhetas do Oxigênio foram criadas por Elias Mendez. Este podcast foi produzido com apoio da Fapesp, por meio da bolsa Mídia Ciência, para divulgação do projeto Pontes interdisciplinares para a compreensão da vida no Universo: o Núcleo de Apoio à Pesquisa e Inovação em Astrobiologia e o Laboratório de Astrobiologia da USP. Você encontra a gente no site oxigenio.comciencia.br, no Instagram e no Facebook, basta procurar por Oxigênio Podcast. Se gostou deste episódio, indique para seus amigos e amigas. [VINHETA DE ENCERRAMENTO]
Saturno está lanzando una bola curva cósmica y los científicos se rascan la cabeza perplejos. Los científicos han detectado fenómenos atmosféricos inusuales y cambios peculiares en los icónicos anillos del planeta, que les han dejado con más preguntas que respuestas. Es como si Saturno hubiera decidido organizar su propio espectáculo de magia cósmica, deslumbrándonos con desconcertantes ilusiones. La nave espacial Cassini ha sido nuestros ojos y oídos, captando comportamientos extraños e inesperados que tienen a los científicos acurrucados en la contemplación cósmica. Así que, si te gustan los enigmas interplanetarios, Saturno es actualmente el billete más caliente del sistema solar.
Saturn's moon Titan is one of the most Earth-like worlds in our Solar System, with a dense nitrogen atmosphere, weather cycles, methane rivers, and vast organic dune fields. It also happens to be the perfect place to fly a drone. NASA's Dragonfly mission is doing exactly that, sending a car-sized, nuclear-powered rotorcraft to explore Titan's surface starting in 2034. With just two years until launch, the team is deep in the work of making it happen. This week, we're joined by two members of the Dragonfly team from the Johns Hopkins Applied Physics Laboratory. Felipe Ruiz is the mission's lead rotor engineer and mechanical implementation lead, responsible for designing the eight-rotor system that will carry Dragonfly across Titan's skies. Zibi Turtle is the mission's principal investigator, a planetary scientist whose career has spanned missions from Galileo to Cassini to Europa Clipper. Together, they walk us through the engineering challenges of flying a thousand-kilogram rotorcraft in an alien atmosphere, how the team is testing and validating the design here on Earth, and what the spacecraft's instruments will look for on Titan's surface. Then Bruce Betts, our chief scientist, joins us for What's Up, where we pay tribute to the Ingenuity Mars helicopter and the legacy of the first powered, controlled flight on another world. Discover more at: https://www.planetary.org/planetary-radio/2026-engineering-of-dragonflySee omnystudio.com/listener for privacy information.
April 23, 2026 - Equipped 2026 - Day 1 - 6:30 PM Session Room: Auditorium Title: In The Beginning Speaker: Steve Higginbotham Summary: The lecture by Steve Higginbotham seeks to rekindle awe for God's power and greatness by examining His creation. The speaker argues that modern society often overlooks God's work, becoming more impressed by human achievements like the pyramids of Giza. He contrasts the vastness of the universe (macrocosm) with the complexity of microscopic life (microcosm). Using examples such as Cassini's photo of Earth, the James Webb Telescope's Ultra Deep Field image, the finely tuned Earth–Moon system, and microscopic creatures like the hydrothermal worm and the resilient tardigrade, he underscores God's immense power and intelligent design. He also explores DNA's complexity to showcase God's wisdom at the cellular level. The core message is that creation is a form of natural revelation, universally testifying to God's existence and glory, urging people to seek Him. The lecture concludes by asserting that God's ultimate display of wisdom is not nature, but the creation of the Church. Duration 28:14
Ricky Cassini, CEO of Michroma and a former logistics professor turned biotech founder, breaks down why replacing synthetic food dyes is harder than it sounds—and why fermentation-based colorants can outperform both petrochemical dyes and many plant-based “natural” extracts. The conversation covers the core technical constraints that matter to food companies (thermal stability, pH stability, coloring power, flavor neutrality, and supply reliability), why fermentation behaves more like manufacturing than farming, and how regulatory shifts are accelerating demand for bio-based reds and whites (including titanium dioxide alternatives). For an audience following the future of materials and biomanufacturing, this episode is a practical look at how industrial fermentation can modernize a legacy supply chain while meeting performance and consumer expectations.Grow Everything brings the bioeconomy to life. Hosts Karl Schmieder and Erum Azeez Khan share stories and interview the leaders and influencers changing the world by growing everything. Biology is the oldest technology. And it can be engineered. What are we growing?Learn more at www.messaginglab.com/groweverythingChapters:(00:00:00) Cold open: “Are we eating printing ink?” + beverage innovation(00:06:55) Conference mode + introducing Ricky Cassini (Michroma)(00:11:05) How a strategy consultant became a fungal pigments CEO(00:14:10) Pigment vs dye: soluble vs dispersed (coffee analogies)(00:16:05) The “food contradiction”: healthy intent, petrochemical reality(00:18:40) Why plant-based reds struggle (cost, stability, supply chain)(00:22:35) Pricing confusion: cost per kilo vs cost-in-use (paint analogy)(00:26:05) What colors Michroma is starting with (red, yellow/orange, white)(00:28:05) Performance specs that matter: heat, pH, light, flavor, reliability(00:30:05) Labeling: “Red 40 / Yellow 5” vs natural naming + how novel fermented colors may be listed(00:33:05) Go-to-market: choosing categories where stability is the bottleneck (dairy, bakery, snacks, vitamins)(00:35:15) Unexpected use cases: aquaculture (salmon) + packaging inks that can migrate into food(00:36:55) Manufacturing strategy: partnering with CJ vs building plants; “time compression” and capex discipline(00:38:10) Scaling pressure points: regulatory timeline + the time/capital reality for novel ingredients(00:39:45) 5–10 year vision: same bright foods, but colors made via microbes (supply chain shift)(00:40:35) Quickfire round: fluorescent food-grade pigments, Gantt charts, and GMO marketing(00:41:40) Wrap + host outro + upcoming episodes and partner promoLinks and Resources:michromaMichroma says fermentation will power next wave of natural colors2025 1st Place Winner of The Future is Fungi Awards159. The Future Is Fungi Awards: From Mushroom Dreams to Real-World ThingsCJ bio - Global FermentationWorld Bio Markets - Our new partnersBioInnovations Events - For 25% off use code: Grow EverythingWorld Bio Markets - PodcastsMars SnackingMolecule Manifesto - Advanced Biotech for Sustainability ReportTickets for the GE Live Event with Roebling Topics Covered:fungi pigments, bio-based colorants, fungal dyes, natural pigments, sustainable color, food colorants, synthetic dyes alternatives, antioxidant pigments, food and beverage, clean ingredientsHave a question or comment? Message us here:Text or Call (804) 505-5553Instagram / Twitter / LinkedIn / Youtube / Grow EverythingMusic by: Nihilore Production by: Amplafy Media
www.aufonddelaclasse.comLes Entretiens sur la pluralité des mondes de Fontenelle paraissent en 1686. Leur auteur, né en 1657 et mort centenaire en 1757, est un homme de frontières : entre littérature et science, entre le classicisme du Grand Siècle et les Lumières à venir. Le livre connaîtra trente-trois éditions de son vivant.Le principe est simple : six soirées de conversation entre un philosophe et une marquise, dans le parc d'un château. Chaque soir, ils s'avancent un peu plus loin dans l'univers — la Terre, la Lune, les planètes, les étoiles fixes, l'infini. Le contenu scientifique est sérieux : système de Copernic, tourbillons de Descartes, pluralité des mondes. Mais tout cela est dit sur le ton du badinage galant, avec des métaphores, de l'humour, de la légèreté.Pour comprendre ce choix, il faut replacer le livre dans son contexte. Au XVIIe siècle, la curiosité scientifique est encore suspecte : Augustin la condamnait comme péché, Pascal tremblait devant « le silence éternel de ces espaces infinis ». En même temps, la révolution scientifique de Galilée, Descartes et Cassini a bouleversé la vision de l'univers. Fontenelle veut faire entrer ces idées nouvelles dans les salons aristocratiques — un monde régi par le bon goût, la conversation et l'élégance.Son projet se résume dans une phrase de la Préface : « Il n'y a pas jusqu'aux vérités à qui l'agrément ne soit nécessaire. » Le plaisir n'est pas un ornement ajouté à la science — il en est une condition. Comprendre doit être jouissif.C'est tout le sens du parcours « Le goût de la science » : comment Fontenelle fait-il du désir de savoir une forme de séduction, et de la transmission scientifique un art à part entière ?Hébergé par Ausha. Visitez ausha.co/politique-de-confidentialite pour plus d'informations.
Could there really be life on Enceladus?Enceladus' ocean is far more active than we thought. New images from the James Webb Space Telescope revealed the largest plume ever seen erupting from the tiny moon's frozen surface. Deep diving into Cassini data, scientists have uncovered the chemistry hiding in the depths of the subsurface ocean… and it's more complex and shocking than anyone imagined. Is this small moon the most likely home for life beyond Earth?▀▀▀▀▀▀If you love learning about science as much as I do, head to http://brilliant.org/astrum to learn for free for a full 30 days. You'll also receive 20% off a premium annual subscription, giving you unlimited access to everything on Brilliant.▀▀▀▀▀▀Astrum's newsletter has launched! Want to know what's happening in space? Sign up here: https://astrumspace.kit.comA huge thanks to our Patreons who help make these videos possible. Sign-up here: https://bit.ly/4aiJZNF
SpaceTime with Stuart Gary | Astronomy, Space & Science News
SpaceTime Series 29 Episode 42 *NASA looking at nine possible landing sites for man's return to the Moon NASA have narrowed down their list of possible landing sites for their return of humans to the lunar surface. The Artemis IV mission will target one of nine possible landing sites around the lunar south pole. *Saturn's weird magnetic shield A new study has found that Saturn's magnetosphere – the magnetic bubble surrounding the ringed world – is lopsided. *Concerns grow as a Starlink satellite explodes in orbit SpaceX are still trying to determine what caused the sudden break up of a Starlink broad band communication satellite last week. *The Science Report Climate change to push more venomous snakes towards populated communities. Germany checking out Australia's MQ-28 Ghost Bat autonomous combat aircraft. Teens turning to artificial intelligence for emotional support, validation, and companionship. Alex on Tech new Intel CPU
Наблюдение на Земята (или Earth Observation) звучи доста ясно само по себе си. Разбира се, това е начинът, по който гледаме към суша, вода, градове, земеделие и инфраструктура от орбита - с малката добавка, че целта е да видим как това да е всъщност полезно. В този епизод със Здравко Димитров и Майкъл Цанев говорим за това защо ни трябват нови сателити, къде днес са границите на резолюцията и защо в много случаи по-важно от това колко ясно виждаме е колко често можем да заснемаме. Отваряме и съвсем конкретния въпрос как се достъпват сателитни данни, кои са свободни, кои се купуват, кой реално може да си ги позволи и докъде стига популярната представа, че можем просто да си гледаме вилата от космоса. Обсъждаме какво всъщност могат да разпознаят съвременните системи, какви ограничения още има пред технологията и защо стойността на данните все по-често идва не само от самото изображение, а от анализа върху него. Майкъл разказва и за пътя на своя екип в CASSINI Hackathon 2025, където Avalanche Detectors печели с решение, което комбинира Copernicus Sentinel-1 и Sentinel-2 с метеорологична информация, за да изчислява вероятност от лавина на конкретно място. Епизодът е и естествена прелюдия към 11-ия CASSINI Hackathon, който ще се проведе между 24 и 26 април 2026 г. едновременно на 10 места в Европа, включително София, с тема Space for Water. За България това е и доста релевантна дейност, предвид наводнения през последните години, водните загуби, недостиг и управление на риск при водите . Тук именно космическите данни мога да помогнат. Запишете се тук: https://www.cassini.eu/hackathons/bulgaria В епизода говорим още за: • какво точно означава Earth Observation • защо новите приложения изискват по-чести заснемания, а не само по-добра резолюция • как се купуват и използват сателитни данни днес • кой има достъп до тях и как това се променя • какви са реалните ограничения пред граждански и бизнес приложения • какво може да се постигне в рамките на един хакатон, когато имаш данни, ментори и добре формулиран проблем
Right after his keynote at the Applied Ergonomics Conference, we had a chance to sit down with Cassini Nazir, an interaction designer and professor at the University of North Texas. In his talk, Cassini encouraged ergonomics professionals to think more intentionally about curiosity and how asking better questions and designing with empathy can improve the systems and experiences people rely on every day.And as it happened, his friend Mike Courtney was there too. Mike is a futurist who actually delivered the keynote at last year's conference, so we talked with him about something many professionals are dealing with right now - the rapid pace of technological change and how to make decisions when things are evolving so quickly.Two quick conversations, both recorded at the Applied Ergonomics Conference, about curiosity, design, and navigating a changing world.This bonus episode was recorded live at the Applied Ergonomics Conference as part of Problem Solved LIVE.Every great solution is a story worth telling.Applied Ergonomics Conference sponsored by Applied Ergonomics SocietyLearn more about The Institute of Industrial and Systems Engineers (IISE)Problem Solved on LinkedInProblem Solved on YouTubeProblem Solved on InstagramProblem Solved on TikTokProblem Solved Executive Producer: Elizabeth GrimesInterested in contributing to the podcast or sponsoring an episode? Email egrimes@iise.org
Der Nordpol des Planeten ist von einem riesigen Sechseck aus Wolken umgeben. Es ist größer als die Erde und seit Jahrzehnten stabil. Warum der Wind dort im Sechseck weht, erfahrt ihr in der neuen Folge der Sternengeschichten. STERNENGESCHICHTEN LIVE TOUR in D und Ö: Tickets unter https://sternengeschichten.live Wer den Podcast finanziell unterstützen möchte, kann das hier tun: Mit PayPal (https://www.paypal.me/florianfreistetter), Patreon (https://www.patreon.com/sternengeschichten) oder Steady (https://steadyhq.com/sternengeschichten) Sternengeschichten-Hörbuch: https://www.penguin.de/buecher/florian-freistetter-sternengeschichten/hoerbuch-mp3-cd/9783844553062
Professor Michele Dougherty is President of the Institute of Physics and Professor of Space Physics at Imperial College London. She was appointed Astronomer Royal last year – the first woman to hold the post in its 350-year history.She was brought up in Durban in South Africa and studied for a Bachelor of Science degree in applied maths at Natal University. After completing a Master's and PhD she took up a fellowship at the Max Planck Institute for Astronomy in Germany where she investigated solar wind and galactic wind outflows.In 1991 she joined Imperial College London where she helped devise a magnetic field model for the Ulysses mission. In 1997 she became principal investigator for the magnetometer instrument on board the Cassini probe which was sent to study Saturn and its system.She is currently lead investigator for the J-MAG magnetometer instrument on the European Space Agency's JUICE mission (Jupiter Icy Moons Explorer) which launched in 2023. It will reach Jupiter in 2031 and spend at least three years observing the planet and three of its largest moons, Ganymede, Callisto and Europa.Michele was appointed CBE in the 2018 New Years Honours List for services to UK Physical Science Research.DISC ONE: Puccini: Turandot, Act III: Nessun dorma! Performed by Luciano Pavarotti (tenor), John Alldis Choir, Wandsworth School Boys Choir and London Philharmonic Orchestra, conducted by Zubin Mehta DISC TWO: Cello Concerto in E Minor, Op. 85: III. Adagio. Composed by Elgar. Performed by Jacqueline du Pré (cello) and London Symphony Orchestra, conducted by Sir John Barbirolli DISC THREE: Violin Concerto No. 1 in D Major, Op. 19: III. Moderato. Composed by Tchaikovsky. Performed by Frank Peters Zimmerman (violin), and Berliner Philharmoniker, conducted by Lorin Maazel DISC FOUR: We Three Kings of Orient Are - Robert Shaw Chamber Singers DISC FIVE: Dancing Queen - ABBA DISC SIX: Dance With My Father - Luther Vandross DISC SEVEN: Franck: Panis Angelicus. Performed by Dame Kiri Te Kanawa (soprano), English Chamber Orchestra, conducted by Barry Rose DISC EIGHT: Pie Jesu (From Requiem) Composed by Andrew Lloyd Webber. Performed by Malakai Bayoh, Schola Cantorum of the Cardinal Vaughan Memorial School and London Mozart Players, directed by Scott Price BOOK CHOICE: The Lord of The Rings by J. R. R. Tolkien LUXURY ITEM: An assortment of wine CASTAWAY'S FAVOURITE: Cello Concerto in E Minor, Op. 85: III. Adagio. Composed by Elgar. Performed by Jacqueline du Pré (cello) and London Symphony Orchestra, conducted by Sir John Barbirolli Presenter: Lauren Laverne Producer: Paula McGinleyDesert Island Discs has cast many space experts away to the island over the years including NASA's Dr Nicola Fox, the astronomer Carl Sagan and the astronauts Tim Peake and Chris Hadfield. You can hear their programmes if you search through BBC Sounds or our own Desert Island Discs website.
We caught up with Jana Kominek Vecerkova to learn more about the EUSPA CASSINI Challenge, which is now looking for more interesting startup space ideas for future EU launches. See more details about the project here CASSINI Challenges competition is open | EU Agency for the Space Programme Check out the webinar on the CASSINI Challenge call Microsoft Virtual Events Powered by Teams Jana is a startup ecosystem builder with over 15 years of experience in entrepreneurship, product development, and project management. At the European Union Agency for the Space Programme (EUSPA), she supports space ventures as part of the CASSINI initiative, helping space ventures scale, secure investment, and transform bold ideas into market-ready solutions. As a serial founder, she has launched an acclaimed tech education program and a real estate micro-investment marketplace. Earlier in her career, Jana worked in Brussels managing pan-European projects, collaborating with public and private stakeholders. She holds an MSc in European Political Economy from the London School of Economics. More about Irish Tech News Irish Tech News are Ireland's No. 1 Online Tech Publication and often Ireland's No.1 Tech Podcast too. You can find hundreds of fantastic previous episodes and subscribe using whatever platform you like via our Anchor.fm page here: https://anchor.fm/irish-tech-news If you'd like to be featured in an upcoming Podcast email us at Simon@IrishTechNews.ie now to discuss. Irish Tech News have a range of services available to help promote your business. Why not drop us a line at Info@IrishTechNews.ie now to find out more about how we can help you reach our audience. You can also find and follow us on Twitter, LinkedIn, Facebook, Instagram, TikTok and Snapchat.
SpaceTime with Stuart Gary | Astronomy, Space & Science News
SpaceTime with Stuart Gary Gary - Series 29 Episode 21In this episode of SpaceTime, we explore intriguing revelations about the search for life on Mars, the surprising effects of Saturn's moon Enceladus on its planet, and the monumental volcanic events that reshaped Earth's tectonic landscape.Life on Mars: A New PerspectiveRecent findings suggest that non-biological processes cannot fully explain the organic compounds found in Martian regolith samples collected by NASA's Curiosity rover. Published in the journal Astrobiology, the study indicates that life may have contributed to some of these compounds, challenging previous assumptions. The research involved evaluating potential non-biological sources and concluded that the abundance of organics on Mars could hint at past life, sparking renewed interest in the Red Planet's potential habitability.Enceladus' Electromagnetic InfluenceA fascinating study reveals that Saturn's icy moon Enceladus trails a wake of electromagnetic ripples extending over half a million kilometers, significantly influencing its giant host planet. Data from NASA's Cassini mission demonstrated how Enceladus' geysers contribute to energy and momentum circulation within Saturn's magnetic environment, marking a crucial discovery about the moon's role in the Saturnian system.Earth's Volcanic HistoryNew research highlights how Earth's largest volcanic event, associated with the Ontong Java Plateau, dramatically altered a major tectonic plate. The findings suggest that extensive volcanic activity led to significant physiochemical modifications within the oceanic plate, enhancing our understanding of plate formation processes and the environmental impacts of such massive eruptions.www.spacetimewithstuartgary.com✍️ Episode ReferencesAstrobiology, Geophysical Research Space Physics, Geophysical Research LettersBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.
We caught up with Jana Kominek Vecerkova to learn more about the EUSPA CASSINI Challenge, which is now looking for more interesting startup space ideas for future EU launches. See more details about the project here CASSINI Challenges competition is open | EU Agency for the Space Programme Microsoft Virtual Events Powered by Teams (webinar on the CASSINI Challenge call).Jana is a startup ecosystem builder with over 15 years of experience in entrepreneurship, product development, and project management. At the European Union Agency for the Space Programme (EUSPA), she supports space ventures as part of the CASSINI initiative, helping space ventures scale, secure investment, and transform bold ideas into market-ready solutions. As a serial founder, she has launched an acclaimed tech education program and a real estate micro-investment marketplace. Earlier in her career, Jana worked in Brussels managing pan-European projects, collaborating with public and private stakeholders. She holds an MSc in European Political Economy from the London School of Economics.
• Crew-12 Docks at ISS — The SpaceX Crew-12 mission docked at the International Space Station on Valentine's Day, restoring the station to full strength after over a month with a skeleton crew. Astronauts Jessica Meir, Jack Hathaway, Sophie Adenot, and Andrey Fedyaev join Expedition 74 for an eight-month mission. • Artemis 2 Hydrogen Leak Update — NASA's “confidence test” on the SLS rocket's repaired hydrogen fueling seals showed mixed but cautiously encouraging results. March remains the earliest potential launch window for humanity's first crewed mission to the Moon in over 50 years. • Enceladus: Electromagnetic Powerhouse — A major new study of 13 years of Cassini data reveals Saturn's tiny moon Enceladus generates Alfvén waves extending over 504,000 km, transforming our understanding of how small moons influence giant planetary magnetospheres. • Catching 3I/ATLAS — Researchers from the Initiative for Interstellar Studies propose a Solar Oberth Manoeuvre mission launching in 2035 that could intercept the interstellar comet, currently heading toward Jupiter for its closest pass on March 16. • Geomagnetic Storm Watch — G1 minor storming is likely today as a coronal mass ejection arrives alongside fast solar wind from a returning transequatorial coronal hole. Aurora possible at higher latitudes tonight. • SpaceX Starlink 6-103 — 29 Starlink V2 Mini satellites launched to orbit in the early hours of today, the 10th orbital flight from Cape Canaveral in 2026. LINKS & RESOURCES: • NASA Crew-12 Docking: https://www.nasa.gov/blogs/spacestation/2026/02/14/spacex-crew-12-docks-to-station-beginning-long-duration-mission/ • Artemis 2 Confidence Test Update: https://www.nasa.gov/blogs/missions/2026/02/13/following-confidence-test-nasa-continues-artemis-ii-data-review/ • Enceladus Alfvén Wings Study: https://phys.org/news/2026-02-tiny-enceladus-giant-electromagnetic-saturn.html • 3I/ATLAS Solar Oberth Paper: https://www.universetoday.com/articles/a-new-concept-for-catching-up-with-3iatlas • Space Weather Updates: https://earthsky.org/sun/sun-news-activity-solar-flare-cme-aurora-updates/ • Spaceflight Now Launch Schedule: https://spaceflightnow.com/launch-schedule/ Astronomy Daily is part of the Bitesz.com Podcast Network Website: https://astronomydaily.io Social: @AstroDailyPodBecome a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-space-news-updates--5648921/support.Sponsor Details:Ensure your online privacy by using NordVPN. To get our special listener deal and save a lot of money, visit www.bitesz.com/nordvpn. You'll be glad you did!Become a supporter of Astronomy Daily by joining our Supporters Club. Commercial free episodes daily are only a click way... Click HereThis episode includes AI-generated content.
Dans un article à paraître dans Planetary Science Journal, une équipe de chercheurs montrent grâce à des simulations que Hypérion serait le résultat d'une collision spectaculaire entre Titan et une lune ancienne suite à une déstabilisation orbitale. Cette découverte contribue à expliquer l'origine du système d'anneaux de Saturne. Source Origin of Hyperion and Saturn's Rings in A Two-Stage Saturnian System InstabilityMatjia Cuk et al.à paraître dans The Planetary Science Journalhttps://www.arxiv.org/abs/2602.09281 Illustrations Hyperion imagé par la sonde Cassini le 26 septembre 2005 à une distance d'environ 34 000 km (NASA / JPL-Caltech / Space Science Institute). Illustration de la séquence d'événements du modèle proposé (Matija Ćuk et al.) Matija Ćuk
The 365 Days of Astronomy, the daily podcast of the International Year of Astronomy 2009
https://www.youtube.com/watch?v=-Alz4UXGqLk From March 8, 2017. In just a few months, NASA's Cassini spacecraft is going to die, crashing into the planet Saturn. Let's look back across the mission's history. What were the highlights? What did we learn? Team: Fraser Cain - @fcain / frasercain@gmail.com Karla Thompson - @karlaii Chad Weber - weber.chad@gmail.com Ask me my favorite object in the Solar System, especially to see through a telescope, and my answer is always the same: Saturn. Saturn is this crazy, ringed world, different than any other place we've ever seen. And in a small telescope, you can really see the ball of the planet - you can see its rings. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations. Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.
Midnight Madness Radio Episode 356 with FaceTwo, RedMoon One, Sonic Volt, Minna Ora, St. Unholyness, Shepherds of Cassini, As The Palaces Burn, Dogsflesh, and RETURN TO DARKNESS.
Sous le commandement de Donald Trump, l'opération « Absolute Resolve » (Détermination Absolue) au Venezuela a créé une onde de choc mondiale avec des conséquences économiques majeures, bien au-delà des questions pétrolières et énergétiques. Pour la Chine (partenaire historique de Caracas), les autres BRICS, les potentielles cibles américaines (Groenland, Canada, Cuba) et les investisseurs du monde entier, un océan d'incertitudes se profile. Éco d'ici Éco d'ailleurs donne la parole aux experts. Les invités de l'émission Christopher Dembik, macroéconomiste, conseiller en stratégie d'investissement chez Pictet Asset Management Alicia Garcia-Herrero, cheffe économiste pour la zone Asie-Pacifique de la Banque Natixis (basée à Hong-Kong) Philippe Sébille-Lopez, directeur du cabinet Géopolia, spécialiste des marchés pétroliers Margot François, chercheuse à l'Institut français de géopolitique et analyste chez Cassini, experte de l'économie cubaine Cléa Broadhurst, correspondante permanente de RFI à Pékin Le pétrole vénézuélien : un eldorado complexe Des réserves impressionnantes mais problématiques Le Venezuela possède théoriquement 300 milliards de barils de réserves, principalement dans le fleuve Orénoque, ce qui le placerait au premier rang mondial. Cependant, ces chiffres sont contestés et peu vérifiables. Les défis du pétrole vénézuélien Huile extra-lourde : très visqueuse et très soufrée, nécessitant un traitement particulier Coûts élevés : investissements nécessaires entre 60 et 80 dollars par baril Infrastructure vétuste : années de sous-investissement sous sanctions Raffinage complexe : vendu avec une forte décote sur le marché Un intérêt stratégique pour les États-Unis L'outil de raffinage américain est équipé à 70% pour traiter du brut lourd. Le pétrole vénézuélien correspond parfaitement à ces installations, ce qui explique l'intérêt stratégique au-delà de la simple production. « Nous avons construit l'industrie pétrolière vénézuélienne grâce au talent, au dynamisme et aux compétences des Américains. Et le régime socialiste nous l'a volé en recourant à la force. » - Donald Trump La dimension géopolitique Avant l'intervention, 80% de la production vénézuélienne partait vers la Chine. La Russie, via Rosneft, était également très présente. Pour Washington, il s'agit autant de reprendre le contrôle que d'empêcher les concurrents d'y accéder. Impact sur la Chine : premier acheteur menacé Une relation économique majeure en péril La Chine avait prêté environ 60 milliards de dollars au régime vénézuélien, principalement sous Chavez, sous forme de prêts gagés sur des productions futures de brut. Les compagnies chinoises étaient devenues les principaux acheteurs du pétrole vénézuélien. Conséquences immédiates Le pétrole vénézuélien arrivant en Chine est déjà vendu avec des rabais et passe par des circuits logistiques compliqués. Si Washington bloque ou inspecte les cargaisons, les coûts augmenteront considérablement : assurances plus chères, délais plus longs, risques juridiques accrus. Les raffineurs indépendants chinois, appelés « teapots », qui vivent sur les marges, seront particulièrement touchés. Le baril vénézuélien devient « un baril plus compliqué et plus cher ». « La Chine est profondément choquée et condamne fermement l'utilisation éhontée de la force contre un État souverain. Cela constitue une violation grave du droit international. »- Porte-parole du gouvernement chinois Révision stratégique en Amérique latine L'intervention envoie un signal clair à toute la région. Les gouvernements et entreprises doivent désormais calculer : « Si je fais un gros deal chinois dans un secteur sensible, est-ce que j'attire une pression américaine ? » La Chine ne va pas abandonner l'Amérique latine facilement. La région représente des investissements de près de 200 milliards de dollars dans les minéraux critiques, terres rares, or et argent. Cuba : une économie au bord du précipice Une crise structurelle aggravée L'économie cubaine, déjà en crise permanente depuis la chute de l'URSS, risque le coup fatal. Cuba dépend fortement du pétrole vénézuélien pour son système énergétique vétuste. La situation cubaine Dépendance énergétique : les livraisons vénézuéliennes étaient déjà réduites depuis 2017 Réseau électrique défaillant : coupures de courant quotidiennes, en province on parle "d'allumage de courant" Crise démographique : population passée de 11,2 millions à 9,75 millions (voire 8 millions selon des observateurs) Exode massif : 850 000 Cubains entrés aux États-Unis entre 2021 et 2023 « Cuba est un désastre. Il n'y a pas d'économie. Elle s'est complètement effondrée. Tous les gardes qui ont aidé à protéger Maduro étaient cubains. Les Vénézuéliens devraient déclarer leur indépendance vis-à-vis de Cuba. » - Marco Rubio, Secrétaire d'État américain Risque de crise sociale majeure Les manifestations de juillet 2021, les premières de grande ampleur depuis la révolution, ont été sévèrement réprimées. L'inflation galopante, les pénuries alimentaires, la fin progressive des subventions d'État créent un terreau fertile pour un mécontentement social explosif. Le Groenland : la prochaine cible Au-delà du pétrole : les minerais critiques Le Groenland regorge de ressources stratégiques : terres rares, cuivre, or, uranium, et potentiellement pétrole offshore. Ces minerais sont essentiels pour les industries de pointe, l'aéronautique, le spatial et l'intelligence artificielle. Une stratégie d'acquisition multiforme Les États-Unis disposent de nombreux leviers : pression économique sur le Danemark, proposition d'accords type Porto Rico, exploitation du souhait d'indépendance d'une partie des Groenlandais (environ 30% de l'électorat). La réaction européenne sera probablement limitée, l'Union européenne n'ayant ni l'unité ni les moyens militaires pour s'opposer à Washington. Implications économiques mondiales Le libre-échange fragilisé Au-delà des tarifs douaniers qui préoccupaient déjà en 2025, le monde découvre une "course aux riches et aux ressources" avec une dimension militaire. Cette nouvelle réalité fragilise considérablement le commerce international. Le risque de dédollarisation Les grandes économies, y compris l'Inde, s'inquiètent de l'utilisation du dollar dans leurs transactions. L'intervention au Venezuela pourrait accélérer la recherche d'alternatives monétaires. Cependant, la dédollarisation reste un processus lent. Le dollar demeure dominant dans les transferts internationaux et les réserves mondiales. Historiquement, les transitions monétaires nécessitent soit une guerre, soit une période d'hyperinflation. Le nationalisme métallique La véritable confrontation entre puissances ne porte pas sur la guerre commerciale, mais sur l'accès aux ressources essentielles. L'intelligence artificielle nécessite de l'énergie à bas coût et des minerais critiques. Cette course aux matériaux définit la géopolitique de 2026. Zones à surveiller Myanmar (Birmanie) : régime militaire soutenu par la Chine, riche en ressources Pakistan (Gwadar) : port stratégique pour la Chine dans le cadre des nouvelles routes de la soie Canal de Panama : route commerciale critique évoquée par l'administration Trump Honduras et Paraguay : enjeux autour de la reconnaissance de Taïwan Perspectives pour les investisseurs Le Venezuela : un pari très risqué Malgré les déclarations optimistes, le Venezuela reste extrêmement incertain. Les infrastructures sont vétustes, la corruption endémique, et la situation politique imprévisible. Les investissements nécessitent une vision à dix ans minimum. Certains fonds spéculatifs américains s'intéressent déjà aux obligations d'État vénézuéliennes, qui ont bien performé ces derniers mois. Mais ce sont des stratégies à très haut risque, réservées aux professionnels. Prudence régionale Les investisseurs adoptent une approche prudente sur l'ensemble de l'Amérique latine. Le risque n'est plus seulement la corruption classique des pays émergents, mais un vrai risque d'instabilité géopolitique et d'intervention américaine. La dette vénézuélienne En cas de stabilisation du pays, la dette vénézuélienne pourrait devenir attractive. Cependant, de nombreux obstacles subsistent : contrôles de capitaux stricts, incertitudes juridiques, et nécessité de réformes profondes. Conclusion : l'ère du nationalisme des ressources L'opération "Absolute Resolve" marque un tournant dans la géopolitique mondiale. Elle révèle une doctrine américaine claire : contrôler "l'hémisphère occidental" et ses ressources, éjecter les concurrents chinois et russes de la zone d'influence américaine. Cette approche s'inscrit dans une vision d'"aires civilisationnelles", rappelant la doctrine Monroe du XIXe siècle. Les États-Unis affirment leur droit à dominer leur sphère géographique, comme la Russie le fait avec l'espace slave et la Chine avec sa région. Pour les investisseurs et les entreprises, le monde devient plus fragmenté et plus risqué. Les matières premières, les minerais critiques et les routes commerciales définissent les nouveaux champs de bataille économiques. Cette réalité va structurer l'économie mondiale en 2026 et au-delà. « L'avenir sera déterminé par notre capacité à protéger le commerce, les territoires et les ressources qui sont essentielles à notre sécurité nationale. Tout comme les droits de douane, ils permettent à notre pays de s'enrichir. » - Donald Trump
Sous le commandement de Donald Trump, l'opération « Absolute Resolve » (Détermination Absolue) au Venezuela a créé une onde de choc mondiale avec des conséquences économiques majeures, bien au-delà des questions pétrolières et énergétiques. Pour la Chine (partenaire historique de Caracas), les autres BRICS, les potentielles cibles américaines (Groenland, Canada, Cuba) et les investisseurs du monde entier, un océan d'incertitudes se profile. Éco d'ici Éco d'ailleurs donne la parole aux experts. Les invités de l'émission Christopher Dembik, macroéconomiste, conseiller en stratégie d'investissement chez Pictet Asset Management Alicia Garcia-Herrero, cheffe économiste pour la zone Asie-Pacifique de la Banque Natixis (basée à Hong-Kong) Philippe Sébille-Lopez, directeur du cabinet Géopolia, spécialiste des marchés pétroliers Margot François, chercheuse à l'Institut français de géopolitique et analyste chez Cassini, experte de l'économie cubaine Cléa Broadhurst, correspondante permanente de RFI à Pékin Le pétrole vénézuélien : un eldorado complexe Des réserves impressionnantes mais problématiques Le Venezuela possède théoriquement 300 milliards de barils de réserves, principalement dans le fleuve Orénoque, ce qui le placerait au premier rang mondial. Cependant, ces chiffres sont contestés et peu vérifiables. Les défis du pétrole vénézuélien Huile extra-lourde : très visqueuse et très soufrée, nécessitant un traitement particulier Coûts élevés : investissements nécessaires entre 60 et 80 dollars par baril Infrastructure vétuste : années de sous-investissement sous sanctions Raffinage complexe : vendu avec une forte décote sur le marché Un intérêt stratégique pour les États-Unis L'outil de raffinage américain est équipé à 70% pour traiter du brut lourd. Le pétrole vénézuélien correspond parfaitement à ces installations, ce qui explique l'intérêt stratégique au-delà de la simple production. « Nous avons construit l'industrie pétrolière vénézuélienne grâce au talent, au dynamisme et aux compétences des Américains. Et le régime socialiste nous l'a volé en recourant à la force. » - Donald Trump La dimension géopolitique Avant l'intervention, 80% de la production vénézuélienne partait vers la Chine. La Russie, via Rosneft, était également très présente. Pour Washington, il s'agit autant de reprendre le contrôle que d'empêcher les concurrents d'y accéder. Impact sur la Chine : premier acheteur menacé Une relation économique majeure en péril La Chine avait prêté environ 60 milliards de dollars au régime vénézuélien, principalement sous Chavez, sous forme de prêts gagés sur des productions futures de brut. Les compagnies chinoises étaient devenues les principaux acheteurs du pétrole vénézuélien. Conséquences immédiates Le pétrole vénézuélien arrivant en Chine est déjà vendu avec des rabais et passe par des circuits logistiques compliqués. Si Washington bloque ou inspecte les cargaisons, les coûts augmenteront considérablement : assurances plus chères, délais plus longs, risques juridiques accrus. Les raffineurs indépendants chinois, appelés « teapots », qui vivent sur les marges, seront particulièrement touchés. Le baril vénézuélien devient « un baril plus compliqué et plus cher ». « La Chine est profondément choquée et condamne fermement l'utilisation éhontée de la force contre un État souverain. Cela constitue une violation grave du droit international. »- Porte-parole du gouvernement chinois Révision stratégique en Amérique latine L'intervention envoie un signal clair à toute la région. Les gouvernements et entreprises doivent désormais calculer : « Si je fais un gros deal chinois dans un secteur sensible, est-ce que j'attire une pression américaine ? » La Chine ne va pas abandonner l'Amérique latine facilement. La région représente des investissements de près de 200 milliards de dollars dans les minéraux critiques, terres rares, or et argent. Cuba : une économie au bord du précipice Une crise structurelle aggravée L'économie cubaine, déjà en crise permanente depuis la chute de l'URSS, risque le coup fatal. Cuba dépend fortement du pétrole vénézuélien pour son système énergétique vétuste. La situation cubaine Dépendance énergétique : les livraisons vénézuéliennes étaient déjà réduites depuis 2017 Réseau électrique défaillant : coupures de courant quotidiennes, en province on parle "d'allumage de courant" Crise démographique : population passée de 11,2 millions à 9,75 millions (voire 8 millions selon des observateurs) Exode massif : 850 000 Cubains entrés aux États-Unis entre 2021 et 2023 « Cuba est un désastre. Il n'y a pas d'économie. Elle s'est complètement effondrée. Tous les gardes qui ont aidé à protéger Maduro étaient cubains. Les Vénézuéliens devraient déclarer leur indépendance vis-à-vis de Cuba. » - Marco Rubio, Secrétaire d'État américain Risque de crise sociale majeure Les manifestations de juillet 2021, les premières de grande ampleur depuis la révolution, ont été sévèrement réprimées. L'inflation galopante, les pénuries alimentaires, la fin progressive des subventions d'État créent un terreau fertile pour un mécontentement social explosif. Le Groenland : la prochaine cible Au-delà du pétrole : les minerais critiques Le Groenland regorge de ressources stratégiques : terres rares, cuivre, or, uranium, et potentiellement pétrole offshore. Ces minerais sont essentiels pour les industries de pointe, l'aéronautique, le spatial et l'intelligence artificielle. Une stratégie d'acquisition multiforme Les États-Unis disposent de nombreux leviers : pression économique sur le Danemark, proposition d'accords type Porto Rico, exploitation du souhait d'indépendance d'une partie des Groenlandais (environ 30% de l'électorat). La réaction européenne sera probablement limitée, l'Union européenne n'ayant ni l'unité ni les moyens militaires pour s'opposer à Washington. Implications économiques mondiales Le libre-échange fragilisé Au-delà des tarifs douaniers qui préoccupaient déjà en 2025, le monde découvre une "course aux riches et aux ressources" avec une dimension militaire. Cette nouvelle réalité fragilise considérablement le commerce international. Le risque de dédollarisation Les grandes économies, y compris l'Inde, s'inquiètent de l'utilisation du dollar dans leurs transactions. L'intervention au Venezuela pourrait accélérer la recherche d'alternatives monétaires. Cependant, la dédollarisation reste un processus lent. Le dollar demeure dominant dans les transferts internationaux et les réserves mondiales. Historiquement, les transitions monétaires nécessitent soit une guerre, soit une période d'hyperinflation. Le nationalisme métallique La véritable confrontation entre puissances ne porte pas sur la guerre commerciale, mais sur l'accès aux ressources essentielles. L'intelligence artificielle nécessite de l'énergie à bas coût et des minerais critiques. Cette course aux matériaux définit la géopolitique de 2026. Zones à surveiller Myanmar (Birmanie) : régime militaire soutenu par la Chine, riche en ressources Pakistan (Gwadar) : port stratégique pour la Chine dans le cadre des nouvelles routes de la soie Canal de Panama : route commerciale critique évoquée par l'administration Trump Honduras et Paraguay : enjeux autour de la reconnaissance de Taïwan Perspectives pour les investisseurs Le Venezuela : un pari très risqué Malgré les déclarations optimistes, le Venezuela reste extrêmement incertain. Les infrastructures sont vétustes, la corruption endémique, et la situation politique imprévisible. Les investissements nécessitent une vision à dix ans minimum. Certains fonds spéculatifs américains s'intéressent déjà aux obligations d'État vénézuéliennes, qui ont bien performé ces derniers mois. Mais ce sont des stratégies à très haut risque, réservées aux professionnels. Prudence régionale Les investisseurs adoptent une approche prudente sur l'ensemble de l'Amérique latine. Le risque n'est plus seulement la corruption classique des pays émergents, mais un vrai risque d'instabilité géopolitique et d'intervention américaine. La dette vénézuélienne En cas de stabilisation du pays, la dette vénézuélienne pourrait devenir attractive. Cependant, de nombreux obstacles subsistent : contrôles de capitaux stricts, incertitudes juridiques, et nécessité de réformes profondes. Conclusion : l'ère du nationalisme des ressources L'opération "Absolute Resolve" marque un tournant dans la géopolitique mondiale. Elle révèle une doctrine américaine claire : contrôler "l'hémisphère occidental" et ses ressources, éjecter les concurrents chinois et russes de la zone d'influence américaine. Cette approche s'inscrit dans une vision d'"aires civilisationnelles", rappelant la doctrine Monroe du XIXe siècle. Les États-Unis affirment leur droit à dominer leur sphère géographique, comme la Russie le fait avec l'espace slave et la Chine avec sa région. Pour les investisseurs et les entreprises, le monde devient plus fragmenté et plus risqué. Les matières premières, les minerais critiques et les routes commerciales définissent les nouveaux champs de bataille économiques. Cette réalité va structurer l'économie mondiale en 2026 et au-delà. « L'avenir sera déterminé par notre capacité à protéger le commerce, les territoires et les ressources qui sont essentielles à notre sécurité nationale. Tout comme les droits de douane, ils permettent à notre pays de s'enrichir. » - Donald Trump
A compilation of videos of everything you might not know about our solar system's Gas Giants. From the bizarre characteristics of Uranus, to everything we know so far about Jupiter and Neptune. Take a look at some of Cassini's breathtaking final images. ▀▀▀▀▀▀Astrum's newsletter has launched! Want to know what's happening in space? Sign up here: https://astrumspace.kit.comA huge thanks to our Patreons who help make these videos possible. Sign-up here: https://bit.ly/4aiJZNF
Ilaria apre la puntata parlando di endometriosi, una patologia infiammatoria cronica che colpisce circa il 10–11% delle donne in età riproduttiva, ma che continua a essere poco compresa e fortemente sottofinanziata. Per anni l'endometriosi è stata considerata quasi esclusivamente una malattia ormono-dipendente; oggi, però, nuovi studi suggeriscono che il sistema immunitario giochi un ruolo chiave fin dalle primissime fasi. In particolare, un modello patogenetico a due fasi mostra come neutrofili e macrofagi possano favorire l'attecchimento delle lesioni prima ancora che entrino in gioco gli estrogeni, aprendo la strada a nuove prospettive diagnostiche e terapeutiche.Nell'esterna, Giuliana ci porta fuori dallo studio per affrontare una domanda solo apparentemente paradossale: perché dimenticare è importante? A rispondere è Sergio Della Sala, professore di neuroscienze cognitive umane all'Università di Edimburgo, che spiega come l'oblio non sia un difetto del cervello, ma una funzione fondamentale per filtrare le informazioni, ridurre il sovraccarico cognitivo e rendere la memoria davvero efficiente.A chiudere la puntata è Andrea, che ci porta lontano dalla Terra, su Titano, la luna più grande di Saturno. Una nuova rianalisi dei dati della missione Cassini suggerisce che il celebre oceano sotterraneo ipotizzato per anni potrebbe non esistere. Al suo posto, l'energia mareale sembrerebbe dissiparsi in uno strato di ghiaccio ad alta pressione, forse “slushy”, con sacche di acqua liquida. Sarà la futura missione Dragonfly a dirci se Titano ha ancora qualche sorpresa da svelare.Diventa un supporter di questo podcast: https://www.spreaker.com/podcast/scientificast-la-scienza-come-non-l-hai-mai-sentita--1762253/support.
Not many planetary spacecraft get to shower off. But the Cassini spacecraft did – more than once. It flew through plumes of ice and water vapor from Enceladus, a moon of Saturn. The encounters helped scientists confirm that an ocean hides below the moon’s icy crust. Enceladus is a little more than 300 miles in diameter – roughly the distance from Los Angeles to San Diego. Its surface is completely coated with ice. That makes it the most reflective large body in the solar system, so it looks bright white. Much of that ice comes from more than a hundred geysers near the moon’s south pole. They erupt from deep cracks in the crust. They contain water vapor, water ice, hydrogen, grains of salt, and other compounds. Much of this material falls back on the surface. The rest of it escapes into space, where it forms a thin ring around Saturn. The geysers erupt from a global ocean. It’s buried about 20 to 25 miles below the surface, and it could be 10 miles deep or more. Hot, mineral-rich water could flow into the ocean through fissures on its floor. So the ocean appears to offer all the ingredients for life: liquid water, minerals, and a source of heat. That makes Enceladus a high-priority target in the hunt for life beyond Earth. Saturn is near our own moon this evening. It looks like a bright star, shining steadily through the lunar glare. But you need a good-sized telescope to pick out Enceladus. Script by Damond Benningfield
SpaceTime with Stuart Gary | Astronomy, Space & Science News
SpaceTime with Stuart Gary Gary - Series 28 Episode 150In this episode of SpaceTime, we delve into intriguing discoveries and ongoing challenges in the realm of astrophysics and planetary science.Cosmic Dance of Dying StarsAstronomers have made fascinating observations of a unique star system named Apep, located over 8,000 light years away in the constellation Norma. This rare system consists of three massive stars locked in a 190-year orbit, creating stunning spirals of cosmic dust. Using the advanced capabilities of NASA's Webb Space Telescope and the Very Large Telescope in Chile, researchers captured extraordinary images revealing four distinct dust shells spiraling outward from the stars. Lead author Ryan White from Macquarie University discusses how these findings enhance our understanding of stellar interactions and the evolution of massive stars over time.Titan's Liquid Ocean: A New PerspectiveA recent study challenges the long-held belief that Saturn's largest moon, Titan, harbors a vast underground ocean. Instead, researchers suggest that Titan may have a more complex internal structure characterized by slushy tunnels and pockets of meltwater rather than a global liquid water ocean. This revelation, based on a reanalysis of data from NASA's Cassini mission, could have significant implications for the search for potential life on Titan, indicating that any existing life forms might inhabit a more confined environment with concentrated nutrients.NASA's MAVEN: Communication ChallengesMission managers at NASA are working diligently to restore contact with the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft, which went silent during a routine pass behind Mars on December 6. Engineers are analyzing data from before the loss of signal to identify the cause and determine if the spacecraft can be salvaged. MAVEN has been crucial for studying Mars' atmosphere and has served as a vital communications relay for surface missions.www.spacetimewithstuartgary.com✍️ Episode ReferencesAstrophysical JournalNatureNASA TVBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.(00:00:00) This is space time series 28 episode 150 for broadcast on 22nd December 2025(00:00:47) NASA's Webb Space Telescope reveals four spectacular dust shells from distant star system(00:10:58) New study says Titan probably doesn't have a vast underground liquid water ocean(00:15:57) NASA mission managers continue efforts to restore contact with missing maven spacecraft(00:18:36) New study finds shared genetic patterns across 14 common psychiatric disorders(00:20:56) A new study claims acupuncture treatment for lower back pain reduces pain
In this episode, we journey through a captivating array of discoveries and cosmic events that challenge our understanding of the universe. We kick off with a surprising revelation about Titan, Saturn's largest moon, where new analysis suggests its interior may be a thick, warm slush rather than a vast ocean, complicating the search for extraterrestrial life. Next, we discuss a recent anomaly involving SpaceX's Starlink satellites that resulted in a satellite breaking apart, raising concerns about space debris and its implications for future missions.Shifting gears, we delve into the implications of President Trump's executive order on national space policy, which aims for a 2028 moon landing and addresses the increasing militarization of space. We then unravel the mystery of Fomalhaut B, once thought to be an exoplanet, but now revealed to be a cloud of debris from a cosmic collision, providing insight into the chaotic processes of planet formation.As we explore the interstellar comet 3I ATLAS making its closest approach to Earth, we highlight the fleeting opportunity for scientists to study this visitor from another solar system. Finally, we celebrate the Spherex Space Telescope's completion of its first all-sky infrared map, which promises to answer fundamental questions about the universe's structure and the origins of life.### Timestamps & Stories01:05 – **Story 1: Surprising Discovery about Titan****Key Facts**- New analysis suggests Titan's interior may be a thick, warm slush instead of a vast ocean.- This alters the prospects for extraterrestrial life.03:20 – **Story 2: SpaceX's Starlink Anomaly****Key Facts**- A Starlink satellite experienced an anomaly, breaking apart and creating debris.- The satellite is expected to deorbit and burn up in the atmosphere soon.05:45 – **Story 3: National Space Policy Changes****Key Facts**- President Trump's executive order aims for a 2028 moon landing and addresses space security.- The order reinforces NASA's Artemis program and emphasizes sustainable lunar presence.08:00 – **Story 4: The Mystery of Fomalhaut B****Key Facts**- Fomalhaut B was revealed to be a cloud of debris from a cosmic collision, not a planet.- This discovery offers a real-time look at planetary system formation.10:15 – **Story 5: Interstellar Comet 3I ATLAS Approaches Earth****Key Facts**- The comet is making its closest approach, providing a rare observational opportunity.- It is too faint for the naked eye but can be tracked online.12:00 – **Story 6: Spherex Telescope's All-Sky Map****Key Facts**- The Spherex Space Telescope has completed its first all-sky infrared map in 102 colors.- This map will help answer questions about the universe's structure and the origins of life.### Sources & Further Reading1. NASA2. SpaceX3. James Webb Space Telescope4. European Space Agency5. Space.com### Follow & ContactX/Twitter: @AstroDailyPodInstagram: @astrodailypodEmail: hello@astronomydaily.ioWebsite: astronomydaily.ioClear skies and see you next time!
A compilation of Astrum videos exploring the icy moons orbiting Saturn. We dig into the Cassini probe's unbelievable discoveries, from giant chasms ripping worlds apart, to evidence of moon collisions with Saturn's rings, and uncover the secrets lurking beneath the ice.▀▀▀▀▀▀Astrum's newsletter has launched! Want to know what's happening in space? Sign up here: https://astrumspace.kit.comA huge thanks to our Patreons who help make these videos possible. Sign-up here: https://bit.ly/4aiJZNF
Hoy, Jorge Laborda habla de la posibilidad de regenerar el corazón tras un infarto. Explica cómo la activación controlada de un gen concreto permite que las células cardíacas adultas vuelvan a dividirse, algo que hasta ahora se creía imposible. Experimentos con células de donantes de más de 40 años demostraron divisiones completas y funcionales sin activar otros tejidos, abriendo la puerta a terapias capaces de reparar el daño del corazón después de un infarto. Por su parte, Ángel Rodríguez Lozano aborda la búsqueda de vida en Encélado, una luna de Saturno. Los datos de la misión Cassini y un estudio reciente respaldan la existencia de un océano global activo bajo la capa de hielo que la recubre. La presencia de compuestos orgánicos, hidrógeno y sílice en los géiseres que emergen por las grietas de la superficie sugiere la existencia de procesos hidrotermales similares a los que, en la Tierra, albergan ecosistemas ricos en vida.
Hoy, Jorge Laborda habla de la posibilidad de regenerar el corazón tras un infarto. Explica cómo la activación controlada de un gen concreto permite que las células cardíacas adultas vuelvan a dividirse, algo que hasta ahora se creía imposible. Experimentos con células de donantes de más de 40 años demostraron divisiones completas y funcionales sin activar otros tejidos, abriendo la puerta a terapias capaces de reparar el daño del corazón después de un infarto. Por su parte, Ángel Rodríguez Lozano aborda la búsqueda de vida en Encélado, una luna de Saturno. Los datos de la misión Cassini y un estudio reciente respaldan la existencia de un océano global activo bajo la capa de hielo que la recubre. La presencia de compuestos orgánicos, hidrógeno y sílice en los géiseres que emergen por las grietas de la superficie sugiere la existencia de procesos hidrotermales similares a los que, en la Tierra, albergan ecosistemas ricos en vida.
How do planetary ring systems rings form, and what keeps them in line? What exactly is the Dragon Cloud of Saturn? And what's up with quasi moon 2025 PN7? To find out, Dr. Charles Liu and co-host Allen Liu welcome Cornell University's dynamical astronomer Dr. Phil Nicholson for a refresher course in orbital mechanics. As always, though, we start off with the day's joyfully cool cosmic thing, which is right up Phil's alley: the recent discovery of quasi moon 2025 PN7. Phil unpacks the orbital mechanics to explain the critical differences between quasi moons and regular moons, and also 2025 PN7's strange relationship to Earth's orbit. He also explains the dynamics of the sun's tidal forces and Earth's Hill Sphere. For our first question from the audience, Jameson asks, “Are meteorites smaller copies of planets. Are all of them the same?” Rather than discuss meteorites, which are the tiny survivors that have crashed on Earth, Phil pivots to where many of them come from in the first place: asteroids. Really big asteroids share some characteristics with planets, like being spherical in shape, whereas the smaller ones can be highly irregular, like the dumbbell-shaped asteroid 216 Kleopatra, or Arrokoth, previously known as Ultima Thule. Chuck asks Phil about the different shapes large asteroids can come in, and Phil points out 433 Eros, the second largest Near Earth Object, which is banana shaped. The ensuing brief discussion of the “is it a long, skinny asteroid or an interstellar starship?” debate, like the one sparked by Oumuamua, leads to a conversation about Arthur C. Clarke's “Rendezvous with Rama”, which described just such a starship back in 1973. Somehow, we end up looking at the “face” on Mars and the “Death Star,” aka, Saturn's moon Mimus as it was imaged by the Cassini spacecraft. Phil actually worked on the Cassini mission, and Chuck asks him to talk about his experience peering hundreds of miles deep into Saturn's atmosphere with the spacecraft's Visible and Infrared Mapping Spectrometer (VIMS). Along with other instruments run by other teams, the mission changed our perception of Saturn's “boring” atmosphere, documenting aurora, lightning, and giant storms like the “Dragon Cloud of Saturn.” Our next student question comes from Marvin, who asks, “What exactly is a Shepherd moon?” To answer, Phil describes what Saturn's rings are made of, how they form, and how they're structured. He explains what happens when particles that make up the rings collide, why some rings spread over time, while others stay very narrow, and the role Shepherd satellites play in the process. We end with Chuck soliciting a few classic sci-fi recommendations from Phil, who suggests anything by Arthur C. Clarke, the Foundation Trilogy by Isaac Asimov, and almost anything by Larry Niven, including Ringworld, his most famous series. We hope you enjoy this episode of The LIUniverse, and, if you do, please support us on Patreon at https://www.patreon.com/theliuniverse. Credits for Images Used in this Episode: Orbit of quasi moon 2025 PN7 – Credit: NASA/JPL Earth's Hill Sphere extends between the Lagrange Points L1 and L2. – Credit: Creative Commons / Xander89 433 Eros, a banana-shaped asteroid. – Credit: NASA/JPL/JHUAPL 216 Kleopatra, a dumbbell shaped asteroid – Credit: NSSDC, NASA Arrokoth, previously known as Ultima Thule – Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Roman Tkachenko The “face” on Mars next to a higher resolution image of the same hill. – Credit: NASA / JPL / University of Arizona Mimus as imaged by the Cassini spacecraft. – Credit: NASA / JPL-Caltech / Space Science Institute Visible and Infrared Mapping Spectrometer (VIMS) image of Saturn – Credit: NASA/JPL/Space Science Institute Dragon Cloud of Saturn – Credit: NASA/JPL/Space Science Institute Shepherd moon animation showing Prometheus (right) and Pandora (left) both orbit near Saturn's F ring. – Credit: NASA/JPL/Space Science Institute Uranus ring schematic, solid lines are rings; dashed lines are moon orbits. – Credit: Public Domain / Ruslik0 #LIUniverse #CharlesLiu #AllenLiu #SciencePodcast #AstronomyPodcast #DynamicalAstronomy #PhilNicholson #OrbitalMechanics #Rings #SpaceStorms #QuasiMoons #2025PN7 #HillSphere #433Eros #Asteroid #216Kleopatra #Arrokoth #UltimaThule #Cassini #VisibleAndInfraredMappingSpectrometer #VIMS #DragonCloudOfSaturn #ShepherdMoon
HT2456 - The Most Memorable Photographs of our Age Time has a way of filtering out the unimportant. Think back 500 years ago. We don't remember local politics, but we do remember the great art from that era. What will people, 500 years from now, look back at our era and find most remarkable? I'll guarantee you it won't be your work or my work, nor even the photographs of the masters like Ansel Adams or Edward Weston. No, they will look back at the images the astronauts captured while on the moon, the Voyager, Cassini, and Juno expeditions to the distant planets, the Hubble and Webb telescope images of distant galaxies. Show your appreciation for our free weekly Podcast and our free daily Here's a Thought… with a donation Thanks!
Sponsor Details:This episode of Space Nuts is brought to you with the support of NordVPN. To get our special Space Nuts listener discounts and four months free bonus, all with a 30-day money-back guarantee, simply visit www.nordvpn.com/spacenuts or use the coupon code SPACENUTS at checkout.Exploring Theia, Near-Earth Asteroids, and EnceladusIn this exciting episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a wealth of astronomical discoveries and insights. From new revelations about the ancient collision between Earth and Theia to the astounding discovery of 40,000 near-Earth asteroids, this episode is packed with cosmic revelations that will spark your curiosity about the universe.Episode Highlights:- Theia and Earth's Relationship: Andrew and Fred discuss groundbreaking research from the Max Planck Institute that redefines our understanding of Theia, the protoplanet that collided with Earth. They explore how isotopic similarities suggest Theia was not just a random object, but likely a companion planet in the early solar system.- 40,000 Near-Earth Asteroids: The hosts celebrate the milestone of 40,000 discovered near-Earth asteroids, discussing the implications for planetary defense and the importance of monitoring potentially hazardous objects that could pose a threat to Earth.- Life on Enceladus: A thrilling discussion emerges around the latest findings from the Cassini mission, revealing new organic compounds in the icy plumes of Enceladus. Andrew and Fred ponder the exciting possibility of life existing in the subsurface ocean of this intriguing moon of Saturn.- Updates on Comet 3I Atlas: The episode wraps up with an update on the interstellar comet 3I Atlas, including stunning new images captured from Mars. The hosts discuss the significance of these observations and what they might reveal about the comet's characteristics as it continues its journey through our solar system.For more Space Nuts, including our continuously updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, X, YouTube Music Music, Tumblr, Instagram, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favorite platform.If you'd like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/about.Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Newly released data from both a Cassini probe mission and supercomputer data increases the chance of that life exists on Enceladus. NASA Cassini Study Finds Organics ‘Fresh' From Ocean of Enceladus - NASA Supercomputers decode the strange behavior of Enceladus's plumes | ScienceDaily Fresh ocean spray from Enceladus reveals its strongest life signs - Earth.com Detection of organic compounds in freshly ejected ice grains from Enceladus's ocean | Nature Astronomy For a limited time, visit AuraFrames.com and get $45 off Aura's best-selling Carver Mat frames using promo code COOLSTUFF at checkout. Contact the show - coolstuffdailypodcast@gmail.com Learn more about your ad choices. Visit megaphone.fm/adchoices
Interstellar Comet 3I Atlas: NASA has unveiled new images and data of the interstellar comet 3I Atlas, the third confirmed visitor from beyond our solar system. This comet, rich in carbon dioxide and water ice, offers a unique opportunity to study ancient material from a distant solar system, challenging previous assumptions about interstellar objects.Enceladus' Organic Compounds: Exciting findings from NASA's Cassini mission reveal previously undetected organic compounds in the plumes of Saturn's moon Enceladus. These complex molecules suggest potential for life, as they may serve as precursors to amino acids, highlighting Enceladus as a prime candidate in the search for extraterrestrial life.Nasa's Swift Observatory Rescue Mission: NASA has partnered with Catalyst Space Technologies for a groundbreaking robotic mission to rescue the Neil Girls Swift Observatory. Scheduled for June 2026, this mission aims to extend the observatory's life by boosting it back to a stable orbit, marking a historic first for private commercial space efforts.New Lunar Crater Discovery: NASA's Lunar Reconnaissance Orbiter has discovered a small, fresh crater on the moon, nicknamed "freckle." This 72-foot crater, formed between 2009 and 2012, provides valuable data on impact rates, crucial for planning future lunar missions, including Artemis.James Webb Telescope's Early Universe Discoveries: Astronomers using the James Webb Space Telescope have identified a puzzling young galaxy, Knucks LRD Z8.6, with a supermassive black hole that appears to have formed much faster than expected. This challenges existing theories of black hole and galaxy co-evolution, prompting a reevaluation of cosmic formation models.For more cosmic updates, visit our website at astronomydaily.io. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTubeMusic, TikTok, and our new Instagram account! Don't forget to subscribe to the podcast on Apple Podcasts, Spotify, iHeartRadio, or wherever you get your podcasts.Thank you for tuning in. This is Anna and Avery signing off. Until next time, keep looking up and exploring the wonders of our universe.✍️ Episode ReferencesInterstellar Comet 3I Atlas Insights[NASA](https://www.nasa.gov/)Enceladus Organic Compounds Study[NASA](https://www.nasa.gov/)Swift Observatory Rescue Mission Details[NASA](https://www.nasa.gov/)Lunar Crater Discovery Robert[NASA](https://www.nasa.gov/)James Webb Telescope Findings[NASA](https://www.nasa.gov/)Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-space-news-updates--5648921/support.Sponsor Details:Ensure your online privacy by using NordVPN. To get our special listener deal and save a lot of money, visit www.bitesz.com/nordvpn. You'll be glad you did!Sponsor Details:Ensure your online privacy by using NordVPN. To get our special listener deal and save a lot of money, visit www.bitesz.com/nordvpn. You'll be glad you did!Become a supporter of Astronomy Daily by joining our Supporters Club. Commercial free episodes daily are only a click way... Click HereThis episode includes AI-generated content.
Florida mom Walquiria Cassini, her fiancé, and her adult son were arrested for child sex abuse, but in a stunning twist, all the charges against them have been dropped. Now, Cassini accuses her ex-husband of orchestrating a twisted revenge plot. Plus, the lead detective in the case is under internal investigation for allegedly burying exculpatory evidence. Lawyers Matthew Goldberger and Mac Kenzie Saks join Law&Crime's Jesse Weber to discuss this shocking case.PLEASE SUPPORT THE SHOW: If you're ever injured in an accident, you can check out Morgan & Morgan. You can submit a claim in 8 clicks or less without having to leave your couch. To start your claim, visit: https://forthepeople.com/LCSidebarHOST:Jesse Weber: https://twitter.com/jessecordweberLAW&CRIME SIDEBAR PRODUCTION:YouTube Management - Bobby SzokeVideo Editing - Michael Deininger, Christina O'Shea, Alex Ciccarone, & Jay CruzScript Writing & Producing - Savannah Williamson & Juliana BattagliaGuest Booking - Alyssa Fisher & Diane KayeSocial Media Management - Vanessa BeinSTAY UP-TO-DATE WITH THE LAW&CRIME NETWORK:Watch Law&Crime Network on YouTubeTV: https://bit.ly/3td2e3yWhere To Watch Law&Crime Network: https://bit.ly/3akxLK5Sign Up For Law&Crime's Daily Newsletter: https://bit.ly/LawandCrimeNewsletterRead Fascinating Articles From Law&Crime Network: https://bit.ly/3td2IqoLAW&CRIME NETWORK SOCIAL MEDIA:Instagram: https://www.instagram.com/lawandcrime/Twitter: https://twitter.com/LawCrimeNetworkFacebook: https://www.facebook.com/lawandcrimeTwitch: https://www.twitch.tv/lawandcrimenetworkTikTok: https://www.tiktok.com/@lawandcrimeSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
E no episódio de Caso Bizarro de Halloween desta semana, Ju Cassini está de volta para um episódio extraordinário onde exploramos as histórias das bonecas mais amaldiçoadas do mundo!〰️
The 2025 Nobel prizes are announced this week – how did Science in Action's predictions fare? Science author and thinker Philip Ball judges.Also, a new “Human Disease Blood Atlas” gets a boost, as described by Mathias Uhlén of SciLifeLab.Meanwhile Nozair Khawaja of Free University of Berlin has been revisiting data from the Cassini mission to Enceladus, one of Saturn's moons, back in 2008. His new analysis increases the prospects of habitable conditions deep on the ocean floor beneath the icy crust.Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth(Image: Chair of the Nobel Committee for Chemistry explains a model during a press conference. Credit: Jonathan Nackstrand via Getty Images).
SpaceTime with Stuart Gary | Astronomy, Space & Science News
In this episode of SpaceTime, we dive into the fascinating findings from Saturn's icy moon Enceladus, discuss delays in the Dream Chaser spaceplane's launch schedule, and celebrate NASA's breakthroughs in laser communications for deep space missions.Enceladus: Unveiling Complex ChemistryRecent discoveries reported in the journal Nature Astronomy reveal that Saturn's moon Enceladus is spewing complex organic molecules from its subsurface ocean. Data collected by the Cassini spacecraft during its mission has unveiled fresh insights into the chemical reactions occurring in this hidden ocean. The presence of organic molecules, including precursors for amino acids, raises the possibility that Enceladus may have once harboured conditions suitable for life. This episode explores how these findings could inform future missions aimed at further investigating Enceladus and its potential habitability.Dream Chaser Spaceplane: A Delay in LaunchSierra Space has announced that their Dream Chaser spaceplane's first free flight demonstration has been pushed back to late 2026. Originally designed as a manned spacecraft, Dream Chaser will now serve as a cargo transport for NASA's Commercial Resupply Services, delivering supplies to the International Space Station. The episode discusses the spaceplane's unique design, its cargo capabilities, and the future of its missions, including plans for a fully operational crewed version.Nasa's Optical Deep Space Laser Communications SuccessNASA's new Optical Deep Space Laser Communications project has surpassed all technical goals, paving the way for high-speed communications for future crewed missions to Mars. The technology, which successfully transmitted data over vast distances, demonstrated data rates comparable to broadband Internet services. This breakthrough enables faster communication for astronauts and could revolutionise data transmission in deep space. Tune in to learn more about the technology behind this ambitious project and its implications for future space exploration.www.spacetimewithstuartgary.com✍️ Episode ReferencesNature Astronomyhttps://www.nature.com/natureastronomyNASA Dream Chaserhttps://www.nasa.gov/dreamchaserNASA Optical Deep Space Laser Communicationshttps://www.nasa.gov/lasercomBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.Enceladus: Unveiling Complex ChemistryDream Chaser Spaceplane: A Delay in LaunchNASA's Optical Deep Space Laser Communications Success(00:00) The Dream Chaser spaceplane set for another delay(00:48) Scientists have discovered new complex organic molecules spewing from Saturn's Enceladus(09:41) NASA says new optical Deep Space Laser communications project has exceeded all technical goals(17:29) Around a quarter of all press releases in the United States are probably AI generated(19:23) Companies failing to secure AI agents is causing security risks, warns expert(20:27) Gary Stuart says AI agents can be hacked and should be treated like humans
It’s pretty easy to measure the length of a day on Mars or most other solid bodies. Just pick a feature on the surface and see how long it takes to spin back into view. It’s not so easy for planets that don’t have a solid surface. We can track bands of clouds, but different bands can move at different speeds. That’s been an especially tough problem for Saturn, the second-largest planet in the solar system. Scientists have been trying to pin down its rotation rate – the length of its day – for centuries. When the twin Voyager spacecraft flew past Saturn in the 1980s, they measured the planet’s magnetic field to reveal the rotation rate of its interior. But when the Cassini spacecraft orbited Saturn decades later, its observations showed the day was about six minutes longer. At the end of its mission, Cassini flew between Saturn and the inner edge of its rings. Measuring waves in the rings and tiny changes in the planet’s gravitation field produced yet another length: 10 hours, 33 minutes, and 38 seconds. That’s not necessarily the final answer. Scientists continue to study the giant planet to know how to set their Saturn clocks. And Saturn is in great view tonight. It looks like a bright star quite close to the lower right of the Moon at nightfall, and below the Moon as they set, before dawn. Script by Damond Benningfield
441-1-286-id14 - 1678 - CJF : Moléculas orgánicas complejas halladas al revisar datos obtenidos por la misión Cassini, y más... El muro de Comentarios de los episodios de UDM en iVoox NO es una red social. Universo de Misterios tiene reservado el derecho de admisión y publicación de comentarios. Generalmente, los comentarios anónimos podrían no ser publicados. No envíe comentarios que contengan falacias lógicas. No de información personal. No espere que su comentario sea respondido necesariamente. Comprenda que se reciben diariamente un elevado número de comentarios que han de ser gestionados se publiquen o no. Si hace comentarios con afirmaciones dudosas, arguméntelas aportando enlaces a fuentes fiables (recuerde, el muro de Comentarios de los episodios de UDM en iVoox NO es una red social). En caso de no respaldar su comentario como se indica en la caja de descripción del episodio, su comentario podrá ser no publicado. Contacto con Universo de Misterios: universodemisteriospodcast@gmail.com La imagen de la miniatura que ilustra este episodio ha sido creada con la ayuda de una Inteligencia Artificial. Puedes hacerte Fan de Universo de Misterios y apoyarlo económicamente obteniendo acceso a todos los episodios cerrados, sin publicidad, desde 1,99 €. Aunque a algunas personas, a veces, puede proporcionar una falsa sensación de alivio, la ignorancia nunca es deseable. Pero eso, tú ya lo sabes... Escucha el episodio completo en la app de iVoox, o descubre todo el catálogo de iVoox Originals
In Plain Sight: A Memoir Infused with Military Psychological Operationsis the raw, introspective autobiography of Jonathan Mark Haber, a Brooklyn-born activist whose relentless quest for truth spans government conspiracies, military psy-ops, and spiritual awakening.The narrative begins in 1960s Brooklyn, where the assassinations of JFK, MLK, and RFK, the Vietnam War, and nuclear brinkmanship ignite Haber's activism. From draft resistance and communal living to building a family in rural Massachusetts, each step fuels his resolve to expose hidden forces shaping history.Central to his journey is a spiritual and political awakening guided by mentors like Karl Grossman, Elwood Babbitt, Eckhart Tolle, and Manhattan Project/NASA whistleblower Bart Jordan. Their insights propel his work with Flyby News, where he challenges official narratives—from the Cassini flyby and 9/11 to COVID-19—revealing the pervasive reach of military psychological operations.A defining collaboration with Jordan uncovers evidence of ancient Martian artifacts and languages, suggesting a pre-ice-age warning: humanity must break war's cyclical destruction or face oblivion. (Further details are explored in FlybyNews.com and on YouTube: "Bart Jordan: Manhattan Project NASA Whistleblower.")Interwoven with investigative rigor is Haber's personal battle—chronic pain, kidney failure, and profound loss—met with resilience and a belief in love's transformative power. More than a memoir, In Plain Sight is a call to confront deception and forge a future rooted in peace.https://amzn.to/3ImWDCwBecome a supporter of this podcast: https://www.spreaker.com/podcast/the-opperman-report--1198501/support.
This episode of Space Nuts is brought to you with the support of NordVPN. Protect your online privacy and access with our special deal by visiting www.nordvpn.com/spacenuts or use the promo code SPACENUTS at checkout.Cosmic Mysteries: Little Red Dots and Astronomical AchievementsIn this exciting episode of Space Nuts, hosts Heidi Campo and Professor Fred Watson explore the latest discoveries and breakthroughs in astronomy. From the intriguing mystery of the "little red dots" observed by the James Webb Space Telescope to the historic appointment of the first female Astronomer Royal, this episode is packed with cosmic insights and fascinating stories.Episode Highlights:- The Mystery of the Little Red Dots: Fred delves into the enigma surrounding the bright, red galaxies identified by the James Webb Space Telescope. He explains their significance, formation theories, and how they might provide a glimpse into the early universe, dating back nearly 12 billion years.- Celebrating Michelle Doherty: The hosts proudly announce the appointment of Michelle Doherty as the first female Astronomer Royal in over 300 years. Fred highlights her groundbreaking contributions to planetary science and her pivotal role in major NASA missions, including the Cassini mission to Saturn.- Detecting Life on Mars: A groundbreaking new test developed by researchers in the UK shows promise for detecting signs of life on Mars using existing rover technology. Fred discusses how this test could revolutionize our search for extraterrestrial life by analyzing chemical bonds in cell membranes.- SpaceX's Starship Launches: The episode wraps up with an update on SpaceX's ambitious Starship program, discussing the challenges and successes of recent launches. Fred reflects on the engineering feats and the importance of these missions for future lunar exploration.For more Space Nuts, including our continuously updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, X, YouTube Music Music, Tumblr, Instagram, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favorite platform.If you'd like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/aboutStay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.Got a question for our Q&A episode? https://spacenutspodcast.com/amaBecome a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Exclusive Deals For Reading With Your Kids Listeners! Visit www.zivo.life and use the promo code READ to get 30% off The Better Microalgae – your ultimate daily nutrient boost! Visit www.BigForkBrands.com and use the promo code READ to get 20% off the most delicious pork snacks ever. Visit www.CozyEarth.com and use the promo code READ to get an incredible 41% off their ultra cozy and comfy bedding. Join us for a delightful episode as we chat with two inspiring children's authors: Tara J Hannon, creator of the charming chapter book series "The Only Ghost at School" and "The Only Ghost at Summer Camp," and Dr. Sheila Kanani, author of the fascinating non-fiction book "Are There Rainbows in Space?" Tara J Hannon shares the story behind Ghosty, a lovable ghost navigating the challenges of fitting in at a new school and summer camp. Tara explains the differences between picture books, chapter books, and middle-grade novels, and reveals how her books blend engaging art, humor, and puns to help emerging readers build confidence. We dive into important themes like the difference between fitting in and truly belonging, and how Ghosty's journey can help kids embrace their uniqueness—especially in today's world of social media and peer pressure. Next, Dr. Sheila Kanani takes us on a colorful journey through space, answering the big question: Are there rainbows in space? Dr. Kanani, a planetary scientist and passionate science communicator, discusses her love for Saturn, her work on the Cassini mission, and her mission to inspire more girls to pursue STEM careers. She shares fun facts about light, color, and the animal kingdom, and offers practical advice for parents and teachers on making science accessible and exciting for kids. Whether you're looking for a funny, heartwarming chapter book for your child or a science-packed adventure that sparks curiosity, this episode is packed with book recommendations, parenting tips, and encouragement to keep reading together. Don't miss out on these engaging conversations with Tara Hannon and Dr. Sheila Kanani—perfect for parents, teachers, and anyone passionate about children's literature and learning! Click here to visit our website – www.ReadingWithYourKids.com Follow Us On Social Media Facebook - https://www.facebook.com/readingwithyourkids Instagram - https://www.instagram.com/readingwithyourkids/ X - https://x.com/jedliemagic LinkedIn - https://www.linkedin.com/company/reading-with-your-kids-podcast/ Please consider leaving a review of this episode and the podcast on whatever app you are listening on, it really helps!
Earth has something in common with Titan, the largest moon of Saturn. They’re the only two bodies in the solar system with liquids flowing and ponding on the surface. In the case of Earth, that liquid is water. But on frigid Titan, it’s liquid hydrocarbons – methane and ethane. Titan is the second-largest moon in the solar system – a bit bigger than the planet Mercury. Its surface is extremely cold – hundreds of degrees below zero. Its atmosphere is thicker than Earth’s, and it’s topped by a dense layer of smog. The Cassini spacecraft used radar to peer through the clouds. And its findings were remarkable. It discovered rivers flowing across the surface, emptying into lakes and seas. It also found clouds, which occasionally produce rain. Everything we can see on Titan contains a lot of carbon-based compounds – some of the raw building blocks of life. That’s led to speculation that Titan might have the precursors to life – or even life itself – hidden in a giant ocean below the crust. To be clear, there’s no evidence of life. But future missions to Titan will sniff around for such evidence – perhaps adding to the list of things that Earth and Titan have in common. Saturn appears quite close to our own moon tonight. It looks like a bright star to the lower left of the Moon as they climb into good view, by about 11 o’clock. But you’ll need a small telescope to pick out Titan. Script by Damond Benningfield
Powering spacecraft, especially out in the dark, cold outer solar system, is a huge challenge. There are limits to how large solar panels can be, and they are not very efficient in the weak sunlight beyond Mars. For decades, choice flagship NASA missions have used RTGs--radioisotope thermoelectric generators--to fill this need. From the experiments on the Apollo missions to the Viking Mars landers, Galileo to Jupiter, Cassini to Saturn, and the twin Voyagers, RTGs have provided decades of power for space exploration. From Plutonium to Americium, nuclear elements provide years and years of heat that can be converted into electricity. Dr. Rob O'Brien is the Director of the Center for Space Nuclear Research for the Universities Space Research Association and has specialized in RTGs for decades. It's a fascinating dive into atomic space batteries! Headlines The End of the Universe is Nigh (in 33 Billion Years): New dark matter discoveries suggest an earlier end to the universe, leading to a humorous discussion about bucket list items. August 2nd "Solar Eclipse": Rumors of an August 2nd, 2025, total solar eclipse are false; the next one on that date is in 2027 that won't darken the entire world, but will be the longest one of the century. Mother Earth 2.0 (L98-59f): Discussion of exoplanet L98-59f, 35 light-years away, and its potential habitability despite orbiting a red dwarf with a 23-day year. NASA Budget Concerns: Senate and House pushback against proposed cuts to NASA's 2026 science mission budget is discussed, with calls to preserve vital research. Mass Exodus at NASA: Senior NASA staff, including scientists and engineers, are reportedly leaving due to budget cuts, raising concerns about future capabilities. Main Topic - Dr. Robert O'Brien & RTGs (Radioisotope Thermoelectric Generators) Understanding RTGs: Dr. O'Brien explains RTGs convert heat from radioactive decay into electricity using the Seebeck effect. Early Use of RTGs in Space: The first US public RTG demonstration was on President Eisenhower's desk, and the first space use was the US Navy's Transit 4A satellite in 1961. RTGs on Mars and Deep Space Missions: RTGs power Mars landers and rovers (Viking, Curiosity, Perseverance), and deep space missions like Voyager, Galileo, and Cassini, providing long-term power in harsh environments. Fission Reactors vs. RTGs: RTGs suit small systems and backup power, while fission reactors are better for high-power needs of human expeditions. Plutonium-238 Production Challenges: The scarcity of plutonium-238 is due to its production requiring nuclear reactors and past moratoriums on reprocessing. Americium-241 as an Alternative: Americium-241, abundant in spent fuel and now accessible due to lifted moratoriums on reprocessing, is a viable alternative for powering missions despite lower energy density. Americium in Smoke Detectors and Safety: Americium's safe use in smoke detectors is highlighted, while acknowledging the hazards of working with nuclear materials. Public Perception and RTG Safety: Discussion covers historical atomic energy perceptions, from early toys to environmental concerns, emphasizing rigorous engineering and safety measures like ablative and impact-resistant casings for RTGs. Recovery of These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/this-week-in-space/episodes/170 Hosts: Rod Pyle and Tariq Malik Guest: Dr. Robert O'Brien