Podcasts about Fritz Zwicky

La matière noire reste l'une des plus grandes énigmes de l'astrophysique moderne. Invisible, elle représente pourtant environ 25 % de l'univers, influençant la formation des galaxies et la structure cosmique. Depuis sa première détection indirecte en 1930 par Fritz Zwicky, puis confirmée par Vera Rubin en 1970 grâce aux courbes de rotation des galaxies, cette matière insaisissable défie toutes nos théories. Jusqu'ici, les hypothèses se concentraient sur des particules exotiques comme les WIMPs ou les axions, mais une nouvelle découverte pourrait tout changer. Au centre de la Voie Lactée, un nuage d'hydrogène ionisé de façon inexplicable intrigue les chercheurs. Aucune source d'énergie connue – ni supernovae, ni rayons cosmiques, ni Sagittarius A* – ne semble pouvoir expliquer ce phénomène. Une hypothèse fascinante émerge : et si cette ionisation était due à une nouvelle forme de matière noire ? Contrairement aux WIMPs, cette variante plus légère pourrait interagir différemment avec la matière ordinaire, s'annihilant et libérant de l'énergie sous forme de particules chargées. Si confirmé, ce scénario révolutionnerait notre compréhension de l'univers et nous rapprocherait peut-être enfin de l'identification de cette substance énigmatique.

Chi ipotizzò per primo la Materia Oscura, la misteriosa massa che sembra pervadere tutto l'Universo? La seconda puntata della rubrica “Geni Impolverati” è dedicata a Fritz Zwicky. L'astrofisico più fantasioso e politicamente scorretto della storia.Per sostenerci: https://associazioneatelier.it/Per contatti: associazioneatelier@gmail.com

For many of us, dark matter and dark energy are two of the least understood areas of cosmology and astrophysics. This week, we invited Alina Kiessling and Jason Rhodes, both Research Scientists at NASA's Jet Propulsion Laboratory, to explain these concepts and their broader implications for cosmology, exoplanet research, and more. Both of them are working on major space telescope projects to research "dark physics," as they will explain. Guest co-host Isaac Arthur asks compelling, comprehensive questions about physics and cosmology while Rod asks things like "is dark energy dangerous?" because, let's face it, someone has to ask the dumb questions. Join us for the fascinating deep dive into dark forces! Headlines: Chinese rocket startup Space Pioneer accidentally launched a rocket during a static ground test, highlighting the unpredictable nature of rocketry. SpaceX and Jared Isaacman's Polaris Dawn mission, set for July 34th, 2024, aims to conduct the first private spacewalk and set a new orbital altitude record of 870 miles. NASA announced that Boeing's Starliner spacecraft is in good enough condition to stay at the International Space Station for at least 45 days despite ongoing investigations into malfunctioning thrusters and helium leaks. Main Topic - Understanding the Darkness: Guests Jason Rhodes and Alina Kiessling, both Research Scientists and Astrophysicists at JPL, share their backgrounds and how they met through their shared passion for cosmology. The universe's composition, with dark matter and dark energy making up 95% of its content. Exploring the history of dark matter discovery, from Fritz Zwicky's observations in the 1930s to Vera Rubin's groundbreaking work in the 1960s and 70s. The differences between dark matter and dark energy, their effects on the universe's structure, and the challenges in studying them. The "cosmological crisis" or Hubble tension, which arises from discrepancies between early and late universe measurements. Upcoming space telescope missions, including Euclid, the Nancy Grace Roman Space Telescope, and the Vera Rubin Observatory, are highlighted as crucial tools for advancing our understanding of dark matter and dark energy. The potential need for new physics to explain current observations is explored, with the guests expressing excitement about the possibility of groundbreaking discoveries. Exoplanet research: discussing how the Roman Space Telescope will use microlensing and coronagraphy techniques to detect and study distant worlds. The potential for detecting biosignatures on exoplanets, with a focus on identifying signs of life through spectroscopic analysis.Jason and Alina's advice for aspiring astrophysicists, emphasizing the growing importance of machine learning and artificial intelligence in the field. Finally, a lighthearted discussion of the guests' personal lives and travel experiences, highlighting the balance between their professional and family commitments. Host: Rod Pyle Co-Host: Isaac Arthur Guests: Jason Rhodes and Alina Kiessling Download or subscribe to this show at https://twit.tv/shows/this-week-in-space. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit

For many of us, dark matter and dark energy are two of the least understood areas of cosmology and astrophysics. This week, we invited Alina Kiessling and Jason Rhodes, both Research Scientists at NASA's Jet Propulsion Laboratory, to explain these concepts and their broader implications for cosmology, exoplanet research, and more. Both of them are working on major space telescope projects to research "dark physics," as they will explain. Guest co-host Isaac Arthur asks compelling, comprehensive questions about physics and cosmology while Rod asks things like "is dark energy dangerous?" because, let's face it, someone has to ask the dumb questions. Join us for the fascinating deep dive into dark forces! Headlines: Chinese rocket startup Space Pioneer accidentally launched a rocket during a static ground test, highlighting the unpredictable nature of rocketry. SpaceX and Jared Isaacman's Polaris Dawn mission, set for July 34th, 2024, aims to conduct the first private spacewalk and set a new orbital altitude record of 870 miles. NASA announced that Boeing's Starliner spacecraft is in good enough condition to stay at the International Space Station for at least 45 days despite ongoing investigations into malfunctioning thrusters and helium leaks. Main Topic - Understanding the Darkness: Guests Jason Rhodes and Alina Kiessling, both Research Scientists and Astrophysicists at JPL, share their backgrounds and how they met through their shared passion for cosmology. The universe's composition, with dark matter and dark energy making up 95% of its content. Exploring the history of dark matter discovery, from Fritz Zwicky's observations in the 1930s to Vera Rubin's groundbreaking work in the 1960s and 70s. The differences between dark matter and dark energy, their effects on the universe's structure, and the challenges in studying them. The "cosmological crisis" or Hubble tension, which arises from discrepancies between early and late universe measurements. Upcoming space telescope missions, including Euclid, the Nancy Grace Roman Space Telescope, and the Vera Rubin Observatory, are highlighted as crucial tools for advancing our understanding of dark matter and dark energy. The potential need for new physics to explain current observations is explored, with the guests expressing excitement about the possibility of groundbreaking discoveries. Exoplanet research: discussing how the Roman Space Telescope will use microlensing and coronagraphy techniques to detect and study distant worlds. The potential for detecting biosignatures on exoplanets, with a focus on identifying signs of life through spectroscopic analysis.Jason and Alina's advice for aspiring astrophysicists, emphasizing the growing importance of machine learning and artificial intelligence in the field. Finally, a lighthearted discussion of the guests' personal lives and travel experiences, highlighting the balance between their professional and family commitments. Host: Rod Pyle Co-Host: Isaac Arthur Guests: Jason Rhodes and Alina Kiessling Download or subscribe to this show at https://twit.tv/shows/this-week-in-space. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit

For many of us, dark matter and dark energy are two of the least understood areas of cosmology and astrophysics. This week, we invited Alina Kiessling and Jason Rhodes, both Research Scientists at NASA's Jet Propulsion Laboratory, to explain these concepts and their broader implications for cosmology, exoplanet research, and more. Both of them are working on major space telescope projects to research "dark physics," as they will explain. Guest co-host Isaac Arthur asks compelling, comprehensive questions about physics and cosmology while Rod asks things like "is dark energy dangerous?" because, let's face it, someone has to ask the dumb questions. Join us for the fascinating deep dive into dark forces! Headlines: Chinese rocket startup Space Pioneer accidentally launched a rocket during a static ground test, highlighting the unpredictable nature of rocketry. SpaceX and Jared Isaacman's Polaris Dawn mission, set for July 34th, 2024, aims to conduct the first private spacewalk and set a new orbital altitude record of 870 miles. NASA announced that Boeing's Starliner spacecraft is in good enough condition to stay at the International Space Station for at least 45 days despite ongoing investigations into malfunctioning thrusters and helium leaks. Main Topic - Understanding the Darkness: Guests Jason Rhodes and Alina Kiessling, both Research Scientists and Astrophysicists at JPL, share their backgrounds and how they met through their shared passion for cosmology. The universe's composition, with dark matter and dark energy making up 95% of its content. Exploring the history of dark matter discovery, from Fritz Zwicky's observations in the 1930s to Vera Rubin's groundbreaking work in the 1960s and 70s. The differences between dark matter and dark energy, their effects on the universe's structure, and the challenges in studying them. The "cosmological crisis" or Hubble tension, which arises from discrepancies between early and late universe measurements. Upcoming space telescope missions, including Euclid, the Nancy Grace Roman Space Telescope, and the Vera Rubin Observatory, are highlighted as crucial tools for advancing our understanding of dark matter and dark energy. The potential need for new physics to explain current observations is explored, with the guests expressing excitement about the possibility of groundbreaking discoveries. Exoplanet research: discussing how the Roman Space Telescope will use microlensing and coronagraphy techniques to detect and study distant worlds. The potential for detecting biosignatures on exoplanets, with a focus on identifying signs of life through spectroscopic analysis.Jason and Alina's advice for aspiring astrophysicists, emphasizing the growing importance of machine learning and artificial intelligence in the field. Finally, a lighthearted discussion of the guests' personal lives and travel experiences, highlighting the balance between their professional and family commitments. Host: Rod Pyle Co-Host: Isaac Arthur Guests: Jason Rhodes and Alina Kiessling Download or subscribe to this show at https://twit.tv/shows/this-week-in-space. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit

For many of us, dark matter and dark energy are two of the least understood areas of cosmology and astrophysics. This week, we invited Alina Kiessling and Jason Rhodes, both Research Scientists at NASA's Jet Propulsion Laboratory, to explain these concepts and their broader implications for cosmology, exoplanet research, and more. Both of them are working on major space telescope projects to research "dark physics," as they will explain. Guest co-host Isaac Arthur asks compelling, comprehensive questions about physics and cosmology while Rod asks things like "is dark energy dangerous?" because, let's face it, someone has to ask the dumb questions. Join us for the fascinating deep dive into dark forces! Headlines: Chinese rocket startup Space Pioneer accidentally launched a rocket during a static ground test, highlighting the unpredictable nature of rocketry. SpaceX and Jared Isaacman's Polaris Dawn mission, set for July 34th, 2024, aims to conduct the first private spacewalk and set a new orbital altitude record of 870 miles. NASA announced that Boeing's Starliner spacecraft is in good enough condition to stay at the International Space Station for at least 45 days despite ongoing investigations into malfunctioning thrusters and helium leaks. Main Topic - Understanding the Darkness: Guests Jason Rhodes and Alina Kiessling, both Research Scientists and Astrophysicists at JPL, share their backgrounds and how they met through their shared passion for cosmology. The universe's composition, with dark matter and dark energy making up 95% of its content. Exploring the history of dark matter discovery, from Fritz Zwicky's observations in the 1930s to Vera Rubin's groundbreaking work in the 1960s and 70s. The differences between dark matter and dark energy, their effects on the universe's structure, and the challenges in studying them. The "cosmological crisis" or Hubble tension, which arises from discrepancies between early and late universe measurements. Upcoming space telescope missions, including Euclid, the Nancy Grace Roman Space Telescope, and the Vera Rubin Observatory, are highlighted as crucial tools for advancing our understanding of dark matter and dark energy. The potential need for new physics to explain current observations is explored, with the guests expressing excitement about the possibility of groundbreaking discoveries. Exoplanet research: discussing how the Roman Space Telescope will use microlensing and coronagraphy techniques to detect and study distant worlds. The potential for detecting biosignatures on exoplanets, with a focus on identifying signs of life through spectroscopic analysis.Jason and Alina's advice for aspiring astrophysicists, emphasizing the growing importance of machine learning and artificial intelligence in the field. Finally, a lighthearted discussion of the guests' personal lives and travel experiences, highlighting the balance between their professional and family commitments. Host: Rod Pyle Co-Host: Isaac Arthur Guests: Jason Rhodes and Alina Kiessling Download or subscribe to this show at https://twit.tv/shows/this-week-in-space. Get episodes ad-free with Club TWiT at https://twit.tv/clubtwit

Descriptions of the Coma Cluster of galaxies sound like bad car-dealership commercials. The cluster contains more than a thousand galaxies. They're bound together by their mutual gravitational pull. The heart of the cluster is about 330 million light-years away. But the cluster may span as much as two hundred million light-years. But wait — that's not all! There's a lot more to the cluster than we can see. In 1933, Fritz Zwicky found that galaxies in the cluster are moving fast — too fast for the cluster to be held together by the gravity of the visible matter. He concluded that most of the cluster must consist of dark matter — matter that produces no energy, but pulls on the visible matter around it. Today, astronomers calculate that dark matter must make up at least 90 percent of the cluster's mass. But wait! We're not through yet! More galaxies are falling into the Coma Cluster. One group is led by the giant galaxy NGC 4839. Gas is being stripped from the group. It forms a hot tail that's a million-and-a-half light-years long. The group may have plunged through the cluster once, and now is making a second pass. But wait! Oh, well — that's all we have time for! We'll just give you the cluster's address. It's in Coma Berenices. The constellation climbs into good view, in the east, by 8 or 9 o'clock. Some of its brighter stars form sparkling ribbons — with a cluster of galaxies far beyond. Script by Damond Benningfield

Zdravo. V 180. epizodi našega malega podkasta se v predigri opravičimo za vse nevščečnosti ob naših občasnih netočnostih. Ugotovimo, da ostajamo divje netočni, če se le da. Človeko potrebuje le železno voljo, gorečo vero ali včasih oboje. Na primeru luninih men ugotovimo, kar je avtor ugotovil že pred časom (to, da smo problem ljudje in da je bilo vse zavoženo že na drevju) in sklenemo, da smo ljudje zažagani, lunine mene gor ali dol. Ob polčasu se končno potopimo v 17. poglavje 5. knjige, še prej pa obdelamo petunije, difenbahije ali pelargonije. Potem pa le skočimo v poglavje, v katerem se Random spozna z Vodnikom 2.0 oz. se bolj ptica vodnik spoznava z njo, Vodnik pa pokaže kako nedoganljive laserske predstave je sposoben izvesti iz čisto navadnega dežja. Tudi o temni snovi govorimo, čeprav ne vemo, kje je.

What is nothing? Does nothing exist? Neil deGrasse Tyson and comedian Chuck Nice explore cosmological curiosities about the end of the universe, dark matter, and more!NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.Thanks to our Patrons Matej Dvonč, Robert Weaver, David Lindberg, Denis, Jesus Hernandez, and Jack Reeves for supporting us this week.Photo Credit:  NASA / JPL-Caltech / L. Jenkins (GSFC), Public domain, via Wikimedia Commons

Als 1936 ein Elektrotechniker zu Albert Einstein kam und mit ihm über eine besondere Entdeckung sprechen wollte, war der Physiker nicht so begeistert. Es ging um "Lichtringe" von Sternen, die heute aber trotzdem eine wichtige Rolle in der Astronomie spielen. Mehr erfahrt ihr in der neuen Folge der Sternengeschichten. 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)

Die Episode über die Euclid Mission der ESA, Vera Rubin und die Entdeckung der Dunklen Materie.

Explorando la evolución de las galaxias y la importancia de la materia oscura: Una charla con el Dr. Julio NavarroEn esta fascinante entrevista, tuvimos el honor de conversar con el Dr. Julio Navarro, reconocido doctor en Astronomía y destacado profesor en Victoria, Canadá. Con una trayectoria que abarca universidades de renombre como Harvard, Navarro nos adentra en el apasionante mundo de la evolución de las galaxias y la misteriosa materia oscura. Exploramos juntos las características fundamentales de las galaxias y cómo evolucionan a lo largo del tiempo.Uno de los puntos destacados de la conversación fue el análisis profundo sobre la materia oscura y su importancia en el universo. El Dr. Navarro nos brindó una explicación detallada sobre esta enigmática sustancia y por qué su comprensión resulta vital para comprender la formación y evolución de las galaxias. Descubrimos la estrecha relación que existe entre las galaxias y la materia oscura, desvelando cómo su influencia moldea la estructura del cosmos.Durante el podcast, el Dr. Navarro también nos reveló detalles fascinantes sobre un tipo especial de estrellas que no tienen una pertenencia clara a ninguna galaxia. Nos adentramos en la investigación científica que busca comprender la naturaleza y el origen de estas estrellas solitarias y cómo su existencia plantea interrogantes emocionantes sobre la evolución galáctica.Además de abordar temas de vanguardia en astrofísica, el Dr. Navarro compartió su visión sobre cómo estimar la cantidad de estrellas en el universo y exploró las limitaciones de la teoría estándar de las partículas. También profundizamos en el famoso perfil de Navarro-Frenk-White, uno de los descubrimientos científicos que catapultó al Dr. Navarro a la fama en la comunidad científica. Por último, nos brindó una visión personal y emocional sobre su experiencia de haber competido por el prestigioso Premio Nobel y participó en un juego que nos llevó a elegir entre tres grandes científicos: Albert Einstein, Tycho Brahe y Fritz Zwicky.

Ethan Siegel is a theoretical astrophysicist and science communicator. He received his PhD from the University of Florida and held academic positions at the University of Arizona, University of Oregon, and Lewis & Clark College before moving on to become a full-time science writer. Ethan is the author of the book Beyond The Galaxy, which is the story of “How Humanity Looked Beyond Our Milky Way And Discovered The Entire Universe” and he has contributed numerous articles to ScienceBlogs, Forbes, and BigThink. Today, Ethan is the face and personality behind Starts With A Bang, both a website and podcast by the same name that is dedicated to explaining and exploring the deepest mysteries of the cosmos. In this episode, Ethan and I discuss the mysterious nature of dark matter: the evidence for it and the proposals for what it might be. Patreon: https://www.patreon.com/timothynguyen Part I. Introduction 00:00:00 : Biography and path to science writing 00:07:26 : Keeping up with the field outside academia 00:11:42 : If you have a bone to pick with Ethan... 00:12:50 : On looking like a scientist and words of wisdom 00:18:24 : Understanding dark matter = one of the most important open problems 00:21:07 : Technical outline Part II. Ordinary Matter 23:28 : Matter and radiation scaling relations 29:36 : Hubble constant 31:00 : Components of rho in Friedmann's equations 34:14 : Constituents of the universe 41:21 : Big Bang nucleosynthesis (BBN) 45:32 : eta: baryon to photon ratio and deuterium formation 53:15 : Mass ratios vs eta Part III. Dark Matter 1:01:02 : rho = radiation + ordinary matter + dark matter + dark energy 1:05:25 : nature of peaks and valleys in cosmic microwave background (CMB): need dark matter 1:07:39: Fritz Zwicky and mass mismatch among galaxies of a cluster 1:10:40 : Kent Ford and Vera Rubin and and mass mismatch within a galaxy 1:11:56 : Recap: BBN tells us that only about 5% of matter is ordinary 1:15:55 : Concordance model (Lambda-CDM) 1:21:04 : Summary of how dark matter provides a common solution to many problems 1:23:29 : Brief remarks on modified gravity 1:24:39 : Bullet cluster as evidence for dark matter 1:31:40 : Candidates for dark matter (neutrinos, WIMPs, axions) 1:38:37 : Experiment vs theory. Giving up vs forging on 1:48:34 : Conclusion Image Credits: http://timothynguyen.org/image-credits/ Further learning: E. Siegel. Beyond the Galaxy Ethan Siegel's webpage: www.startswithabang.com   More Ethan Siegel & Timothy Nguyen videos: Brian Keating's Losing the Nobel Prize Makes a Good Point but … https://youtu.be/iJ-vraVtCzw Testing Eric Weinstein's and Stephen Wolfram's Theories of Everything https://youtu.be/DPvD4VnD5Z4   Twitter: @iamtimnguyen Webpage: http://www.timothynguyen.org

They have dug through mysteries, faced gunfire and car crashes, put together pieces of this puzzle since arrival days ago in Ithaca and the time has finally come to see for themselves what science and the beyond have uncovered.  Cross Lake Dam and Dr. Fritz Zwicky awaits... Check us out online at www.nastygramrpg.com  Find us on facebook at www.facebook.com/nastygram  and our group is at https://www.facebook.com/groups/865467380821766; we are @nastygramrpg on both Instagram and Twitter. We are lucky to have awesome music on our pod!  More about A Wilhelm Scream here https://www.awilhelmscream.com/ Composer Adrian von Ziegler at https://adrianvonziegler.bandcamp.com/album/the-complete-discography and composer Antti Martikainen at https://anttimartikainen.com/

Growing up in the Swiss Alps, Fritz Zwicky liked to throw rocks across rivers, and snowballs at church steeples. He just wanted to throw things higher and farther than anyone else. Decades later, Zwicky became the first person to throw something away from Earth — a metal ball bearing blasted from the nose cone of a rocket. It escaped Earth's gravity and went into orbit around the Sun. It was the first step in a grand plan to explore the solar system. Zwicky was born 125 years ago today, in Bulgaria. After earning his doctorate in astronomy, he joined the Mount Wilson and Palomar observatories in California. At the time, any star that suddenly flared into view was called a nova. But in the late 1920s, Zwicky realized that not all of these stars are alike. Some are far more powerful than others, so they're called supernovas. Zwicky and a colleague also realized that a supernova should leave behind a crushed corpse, called a neutron star. The first one was discovered more than 30 years later. Zwicky also served as research director at Aerojet Engineering. He studied jet engines, solar-powered furnaces, and colonies on the Moon. And he devised a five-step plan for human expansion into space — from “throwing” pellets farther into space, to reworking the planets and moons of the solar system to make them habitable. The first four steps have all come about. But the last is still a bit more than a stone's throw into the future.  Script by Damond Benningfield Support McDonald Observatory

The Coma Cluster consists of more than a thousand galaxies, all moving through space together. Yet most of the cluster is invisible — it consists of dark matter. It produces no energy, but its gravity pulls on the visible matter around it. The Coma Cluster provided the earliest evidence of dark matter. It was first suspected by Fritz Zwicky, who was born 125 years ago this week. We'll have more about him tomorrow. Zwicky was studying observations of the Coma Cluster made by Edwin Hubble, the namesake of Hubble Space Telescope. He found that many of the galaxies were moving too fast to be held by the gravity of the cluster's visible matter. He surmised that some form of “dark matter” was contributing to the cluster's total gravity. But there were so many uncertainties in the observations that other astronomers didn't buy it. It wasn't until the 1970s that enough evidence began to pile up to convince most astronomers. Today, we know that dark matter makes up about 85 percent of all the matter in the universe. Yet we still don't know what it is. The leading idea has been that it's a heavy subatomic particle. But searches have all come up empty. So new searches are focusing on much lighter particles — perhaps the “missing mass” of the universe. The Coma Cluster is in the constellation Coma Berenices, which climbs into good view in the northeast by 10 or 11 p.m. Small telescopes reveal several of the cluster's galaxies.  Script by Damond Benningfield Support McDonald Observatory

W 1933 roku szwajcarski astronom Fritz Zwicky zauważył, że pewne galaktyki poruszają się tak szybko, że biorąc pod uwagę oddziaływanie grawitacyjne jedynie widzialnej materii, niektóre z nich powinny być wyrzucone z gromady. Tak się jednak nie działo. Dziś pomówimy o czymś czego nie widać i o czym do końca nie wiemy. Ciemna materia. Jej istnienie zdradzają jedynie wywierane przez nią efekty grawitacyjne. Powiemy też o neutrinach, niezwykle małych cząstek elementarnych należących do leptonów, omówimy też czym są słabo oddziałujące masywne cząstki, czyli WIMP-y (Weakly Interacting Massive Particles).W tym celu odwiedzimy wirtualnie naukowców Super-Kamiokande nieopodal miejscowości Kamioka w Japonii. To tam mamy do czynienia z Super-Kamioka Neutrino Detection Experiment.

From 2001, David Blank tells the story of astronomer ahead of his time, Fritz Zwicky, From 2009, once again, Patrick Rubie explains to Ian Woolf the feeling that we've seen this before, from 2009, Ian Woolf recveals to Patrick Rubie the seven ways statistically found to improve your chances of success with online dating Hosted and produced by Ian Wool Support Diffusion by making a contribution Support Diffusion by buying through affiliate links

Šta je tamna materija? Kako je otkrivena? Kako su još krajem 19. veka Lord Kelvin i Poenkare došli do prvih ideja da postoji nedostajuća masa u svemiru koju ne vidimo, a koja nam je neophodna da bismo opisali kretanja zvezda? Šta su rotacione krive galaksija i kako smo na osnovu posmatranja brzina kretanja zvezda u galaksijama zaključili da galaksijama nedostaje masa? Kako je na osnovu upoređivanja vidljive i dinamičke mase Fritz Zwicky došao do sličnog zaključka i kako toj "nedostajućoj masi" dao naziv "tamna materija" 1930-ih godina? Kako je izračunao (i zašto je pogrešio) broj koji nam govori koliko puta više ima tamne materije od vidljive, barionske materije?Šta su nam novo donela radio posmatranja, a posebno posmatranja atomskog vodonika na 21 cm talasne dužine? Kako su Vera Rubin i W. Kent Ford, Jr. otkrili većinu univerzuma i došli do dobrog broja odnosa tamne i vidljive materije?  Na koje još načine možemo da indirektno detektujemo tamnu materiju? Kako smo otkrili njeno postojanje preko gravitacionih sočiva, kako preko anizotropije u kosmičkom mikrotalasnom pozadinskom zračenju i zašto nam anizotropija u CMB-u daje zaključak da je najverovatniji opis Univerzuma onaj koji nudi Lambda-CDM model? Kako MOND ne uspeva da objasni Svemir i zašto je danas paradigma o postojanju tamne materije opšte prihvaćena u nauci? Šta je hladna, a šta topla tamna materija? Kako na čestičnom nivou tragamo za tamnom materijom? Koji su načini indirektne potrage za WIMP-ovima? Kako posmatranjem gama zračenja iz centra Mlečnog puta (ili drugih galaksija) možemo da dođemo do indirektne detekcije tamne materije? Kako tamna materija interaguje međusobno na čestičnom nivou? Koji eksperimenti postoje namenjeni direktnoj detekciji mnogobrojnih kandidata za čestice tamne materije? Sve ovo i još mnogo drugih tema vezanih za tamnu materiju možete čuti u ovoj epizodi Radio Galaksije. Gošća je bila Jovana Petrović, doktorantkinja astrofizike koja se bavi gama zračenjem iz centra Mlečnog puta na Matematičkom fakultetu u Beogradu i game math dizajnom u kompaniji  Playstudios Europe. Support the show

Elena Ruzza"La forza nascosta"Scienziate nella Fisica e nella Storia - Spettacolo teatraleMartedì 8 marzo 2022, Politecnico di Torino, ore 17:45Drammaturgia: Gabriella Bordin, Elena RuzzaIn scena: Elena Ruzza attrice, Fé Avouglan sopranoAl pianoforte: Diego MingollaMusiche: Ale BavoMartedì 8 marzo 2022 alle ore 17.45 nell'aula magna Giovanni Agnelli del Politecnico di Torino sarà presentato “La Forza Nascosta Scienziate nella Fisica e nella Storia”, con la regia di Gabriella Bordin. In scena Elena Ruzza e il soprano Fé Avouglan accompagnata dal vivo al pianoforte da Diego Mingolla.L'evento è organizzato per questa data dai CUG (Comitato Unico di Garanzia) del Politecnico di Torino e dell'Università di Torino. Lo spettacolo offre una visuale sulla Fisica del ‘900 attraverso gli occhi di quattro scienziate che ne sono state protagoniste, anche se hanno ricevuto solo in parte l'attenzione che avrebbero meritato per le loro scoperte e il loro ingegno. Dalle loro storie traspare un tessuto comune dal forte valore intellettuale ed umano, una alchimia tra talento e determinazione, che le ha portate a raggiungere risultati scientifici fondamentali per la comprensione della natura. Dai metodi innovativi per rivelare l'essenza dei processi nucleari agli esperimenti sulle loro simmetrie nascoste, dalla natura sfuggente dei neutrini all'osservazione di galassie lontane. La loro vita si è intrecciata ai cambiamenti sociali e storici vissuti con coraggio ed entusiasmo da ognuna di loro, in un quadro internazionale caratterizzato da grandi sconvolgimenti. Sono ancora troppo poche le persone che si preoccupano di tramandare, celebrare, far conoscere una genealogia femminile. In questo spettacolo incontreremo Marietta Blau, Chien-Shiung Wu, Milla Baldo Ceolin e Vera Cooper Rubin, quattro donne che hanno amato la Scienza, quattro come le forze della Natura: la forza di Gravità, Elettromagnetica, Debole e Forte. Ma c'è un'altra forza, nascosta, che si può percepire solo partecipando a ciò che avverrà sul palcoscenico. Lo spettacolo è un ottimo pretesto per riaccendere in ciascuno spettatore, uomo o donna, giovane o meno, il desiderio di cercare e riconoscere i semi di quella Forza Nascosta, che spinge ad amare la Scienza, luogo di rispetto e di civile convivenza. La Forza Nascosta è stato ideato e promosso da un gruppo di ricercatrici della Sezione di Torino dell'Istituto Nazionale di Fisica Nucleare Anna Ceresole, Nora De Marco e Nadia Pastrone, e del Dipartimento di Fisica dell'Università di Torino, Simonetta Marcello, insieme a Emiliana Losma, esperta di storia delle donne, a Rita Spada, esperta in innovazione tecnologica, all'autrice e regista Gabriella Bordin e all'autrice e attrice Elena Ruzza.E' andato in scena, in streaming, al Teatro della Tosse di Genova il 30 ottobre 2020 nell'ambito del Festival della Scienza per poi debuttare a Torino l'11 dicembre 2020 al Teatro Baretti in differita online su Facebook. Nel 2021 con la rappresentazione all'Osservatorio Astrofisico di Arcetri il 21 settembre lo spettacolo ha ripreso dal vivo in varie sedi ed occasioni anche istituzionali a Torino e dintorni, a Padova, a Roma e a Trento per poi riapprodare a Torino l'8 marzo e spostarsi nuovamente l'11 marzo al teatro Pucciniano di Torre del Lago Puccini - Viareggio.Vera Cooper Rubin (Filadelfia, 23 luglio 1928 – Princeton, 25 dicembre 2016) - Astronoma americana che compí osservazioni fondamentali sulle orbite delle stelle attorno al centro della loro galassia e sulla distribuzione di galassie nell'Universo, arrivando a stabilire la loro organizzazione in ammassi. A lei, si deve la scoperta dell'anomalia del moto delle stelle nelle galassie, evidenza sperimentale a sostegno della teoria della materia oscura formulata da Fritz Zwicky negli anni '30. Marietta Blau (Vienna, 29 aprile 1894 – Vienna, 27 gennaio 1970) - Fisica nucleare austriaca fu pioniera nella rivelazione e nello studio dei processi fra particelle elementari mediante emulsioni fotografiche, stabilendo un metodo che fu alla base della Fisica Nucleare nel ‘900. Portò alla luce le proprietà dei raggi cosmici e delle particelle ad alta energia, scoprendo il fenomeno delle stelle di disintegrazione nella spallazione nucleare.Chien-Shiung Wu (Shanghai, 31 maggio 1912 – New York, 16 febbraio 1997) - Fisica nucleare cinese, trasferita negli Stati Uniti prima della Seconda Guerra Mondiale, divenne un riferimento nello studio del decadimento beta e della fisica nucleare. Progettò e realizzò un celebre esperimento che dimostrò la violazione della simmetria di parità nei processi dominati dalle interazioni deboli, aprendo nuovi scenari in Fisica e la via al premio Nobel per Lee e Yang. Milla Baldo Ceolin (Legnago, Verona, 12 agosto 1924 – Padova, 25 novembre 2011) - Fisica delle particelle italiana, colta e poliedrica, prima donna ad ottenere nel '63 la cattedra presso l'Università di Padova, dove si era laureata nel 1952. Le sue ricerche sulle interazioni deboli si estesero dallo studio dei mesoni K nei raggi cosmici, ai neutrini e le loro oscillazioni, alla stabilità della materia. Visse da protagonista la transizione dalla ``small science” dello studio delle particelle mediante emulsioni nucleari alla ``big science” dei grandi acceleratori. La Curatrice della MemoriaNel tempo breve di questa pièce di prosa e canto, la Curatrice della Memoria ci accompagna in questo viaggio nel tempo e nello spazio non solo per farci conoscere le storie di quattro Scienziate del Novecento, ma anche per ricordarci che molte donne hanno contribuito alla Scienza e alla Società con la loro passione e il loro ingegno. Sono più di quante non ci sia stato raccontato nella narrazione della storia dell'umanità. Molte sono unite fra loro da legami di sangue, di amicizia e d'amore, o per affinità intellettuali e professionali. Una genealogia femminile che desidera essere reclamata e agire nel presente.IL POSTO DELLE PAROLEascoltare fa pensarehttps://ilpostodelleparole.it/

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org Today's 2 topics: - Being night sky friendly means that you only use outdoor lighting fixtures which direct light onto the ground where humans need it. - In 1933 Fritz Zwicky suggested that the high speeds of galaxies in the relatively distant Coma Cluster are indicative of some type of invisible material which is pulling on them.     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.

Oui. Elles n'ont rien à voir.Commençons par définir la matière noire. Il s'agit d'une catégorie de matière, hypothétique, car son existence n'est pas prouvée. Elle a été émise suite à des observations astrophysiques, portant sur la masse des galaxies ou des amas de galaxies.Une observation effectuée en 1933 par l'astronome suisse Fritz Zwicky. Il surveillait un amas de galaxies afin d'assister à des explosions de supernovae. Il avait alors remarqué que les galaxies se déplaçaient à une très grande vitesse, telle qu'elle devrait normalement éjecter les galaxies elles-mêmes de l'amas. Pourtant, ce n'étaient pas le cas. Les galaxies n'étaient pas éjectées. Pour Fritz Zwicky cela ne pouvait s'expliquer que parce qu'une attraction gravitationnelle plus importante les maintenait proches les unes des autres. Il devait donc exister une masse de matière invisbile, plus importante que celle observable. Il émit alors l'hypothèse d'une "matière noire". En 1970, Vera Rubin confirme cette hypothèse et calcule qu'il manquerait jusqu'à dix fois la masse visible pour retenir ces galaxies.L'énergie noire elle n'a rien à voir.L'existence de l'énergie noire est invoquée afin d'expliquer pourquoi l'Univers est en expansion. Depuis le travail de l'astrophysicien Hubble dans les années 1930, nous savons que l'Univers est effectivement en expansion, c'est à dire que ses objets, les étoiles comme les galaxies s'éloignent les unes des autres. L'univers se dilate comme un ballon.Or cela n'est pas logique si l'on prend en compte la gravitation de tous les astres. L'expansion de l'Univers devrait au contraire ralentir car cette force devrait rapprocher les objets les uns des autres. Depuis une trentainre d'années nous savons que cette xpansion accelere. Pour expliquer ce phénomène des astrophysiciens ont imaginé l'existence d'une "énergie noire" qui lutte, ou mêm einverse les effets de l'attraction gravitationnelle. Une énergie dont, si elle existe, nous ignorons absolument tout. On estime cependant aujourd'hui que l'énergie noire représente les 2/3 de notre Univers, et la mtière noire 25%. Voir Acast.com/privacy pour les informations sur la vie privée et l'opt-out.

Wenn MACHOs und RAMBOs gegen WIMPs antreten, dann geht es in der Astronomie um dunkle Materie. Ein "Best of doofe Akronyme" (und alles zur mühsamen Suche nach dunkler Materie) hört ihr in der neuen Folge der Sternengeschichten. 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)

In 1933 Fritz Zwicky suggested that the high speeds of galaxies in the relatively distant Coma Cluster are indicative of some type of invisible material which is pulling on them. In the 1970's Dr. Vera Rubin began to measure the speeds of stars in galaxies using the Doppler shift. She expected stars orbiting at different distances from the centers of spiral galaxies to behave like the planets in our solar system since for these giant star systems the luminous mass that we observe is concentrated towards their centers.  To her amazement the stars near the edge of the great galaxy in Andromeda and many other spiral galaxies are moving at speeds which indicate that these galaxies contain ten times the amount of mass that emits radiation which is visible to us. It was at this point that Dr. Rubin realized that she had discovered compelling evidence to support Zwicky's dark matter hypothesis. 

In this podcast I talk about theoretical physicist Fritz Zwicky and his ability to use his imagination to think outside the box and how that type of creative use of imagination ties into humanity as a whole and how we … Continue reading →

In dieser Folge geht es um den "Nutzungskontext" und damit eine der vier Wissensdomänen der Produktentwicklung. Der Nutzungskontext ist nach DIN definiert als „die Benutzer, Arbeitsaufgaben, Arbeitsmittel (Hardware, Software und Materialien) sowie physische und soziale Umgebung, in der das Produkt genutzt wird“. Wenn man als Product Owner nicht gerade aus der UX-Ecke kommt, mag einem das Thema vielleicht gar nicht soviel sagen. Andererseits werden sich vermutlich viele schon intuitiv und unstrukturiert mit der Frage beschäftigt haben, in welcher Situation und unter welchen Umgebungsvariablen das eigene Produkt genutzt wird. Unser Produktwerker Dominique Winter arbeitet wissenschaftlich an dem Thema und ist insofern einer der besten Experten, um Euch den Nutzungskontext strukturiert zu erklären. Zudem zeigt er im Gespräch mit Tim auf, wie er an das Thema herangeht und welchen Mehrwert die Analyse und Kenntnis des Nutzungskontexts in der Produktentwicklung spielen. Wir hoffen, Euch damit ein paar spannende Anregungen zu geben. Dominique bezieht sich dabei im Gespräch auf die folgenden Quellen: - Die vier Wissensdomänen (https://www.designik.de/2018/08/die-vier-wissensdomaenen-der-produktentwicklung/) - Die "ominöse" DIN-Norm aus dem Gespräch: DIN EN ISO 9241-210:2010 - Der morphologische Kasten von Fritz Zwicky: https://de.wikipedia.org/wiki/MorphologischeAnalyse(Kreativit%C3%A4tstechnik) - Folien zur Forschung von Dominique und seinen Kolleg*innen aus der Wissenschaft (https://de.slideshare.net/designik/morphological-analysis-of-the-context-of-use) - Die wissenschaftliche Veröffentlichung von Dominique und seinen Kolleg*innen zu diesem Thema (https://ieeexplore.ieee.org/document/9141034) Wir freuen uns über Euer Feedback auf produktwerker.de, per Mail an podcast@produktwerker.de oder via Twitter an @produktwerker.

Mathematical models of the world — be they in physics, economics, epidemiology — capture only details that researchers notice and deem salient. Rather than objective claims about reality, they encode (and thus enact) our blind spots. And the externalities created by those models — microscopic pathogens invisible to the naked eye, or differences in the social network structures of two neighborhoods, or food webs disrupted by urban development — have a way of biting back when we ignore them. Structural inequality created by an insufficient model jeopardizes not just the ones left off the map, but the entire systems in which they participate. Science fiction author Philip K. Dick put it well when we said that “Reality is that which, when you stop believing in it, doesn’t go away.” Ultimately, ecological and social justice is dependent on our rigorous empiricism and our dedication to describing all the relevant dimensions of our complex world.Welcome to COMPLEXITY, the official podcast of the Santa Fe Institute. I’m your host, Michael Garfield, and each week we’ll bring you with us for far-ranging conversations with our worldwide network of rigorous researchers developing new frameworks to explain the deepest mysteries of the universe.In this episode, Santa Fe Institute President David Krakauer returns to talk about the latest essays in SFI Transmission series, to shed light on the crucial under-examined margins of our maps — and how good science both enables and demands us to do better.If you value our research and communication efforts, please consider making a one-time or recurring monthly donation at santafe.edu/podcastgive … and/or consider rating and reviewing us at Apple Podcasts. Thank you for listening!Read the essays we discuss in this episode:David Krakauer and Dan Rockmore on out-evolving COVID-19Jon Machta on the noisy equilibrium of disease containment & economic painBrian Enquist on how pandemics rapidly reshape the evolutionary & ecological landscapeMelanie Moses and Kathy Powers on models that protect the vulnerableVisit our website for more information or to support our science and communication efforts.Join our Facebook discussion group to meet like minds and talk about each episode.Podcast Theme Music by Mitch Mignano.Follow us on social media:Twitter • YouTube • Facebook • Instagram • LinkedInMentioned in this episode:Melanie Moses, Kathy Powers, Brian Enquist, Jon Machta, Dan Rockmore, David Krakauer, Michael Garfield, Edgar Allan Poe, Auguste Dupin, Dan Brown, Vera Rubin, Kent Ford, Fritz Zwicky, Robert Koch, Martinus Beijerinck, Charles Darwin, Jennifer Doudna, CRISPR, Cory Doctorow, Peter Singer, William Hamilton, Lauren Ancel Meyers, Caroline Buckee, David B. Kinney, Kurt Wiesenfeld, Chao Tang, Per Bak, Cris Moore, Sidney Redner, Manfred Laubichler, William Gibson, François de Liocourt, Andrey Kolmogorov, Geoffrey West, Andy Dobson, Jessica Flack, Steve Lansing, Nicolas Rashevsky, Darcy Wentworth Thompson, Mahzarin Banaji

Fritz Zwicky è stato uno dei più grandi astrofisici di sempre. Certo, il carattere forse era quello che era ma che ci volete fare: quando uno è genio, è genio.

Fritz Zwicky è stato uno dei più grandi astrofisici di sempre. Certo, il carattere forse era quello che era ma che ci volete fare: quando uno è genio, è genio.

Teorías sobre el Origen del Universo. En este programa en vivo de “Obsesión por el Cielo” Edgar y Pedro platican en general sobre las teorías cosmológicas y sus evidencias. En la primera parte del programa resumimos la Teoría del Big Bang (La Gran Explosión) que es, hasta la fecha, el modelo que mejor explica las evidencias observacionales que tenemos. Esta teoría postula que el Universo entero (espacio, tiempo, materia, energía, fuerzas de la naturaleza, etc.) se creó hace unos 13,750 millones de años en una gran “explosión”. Las principales evidencias que apoyan esta teoría son la abundancia relativa de los elementos ligeros (hidrógeno, deuterio, helio), la expansión del Universo, y el Fondo de Radiación Cósmica en longitudes de onda de microondas. En la segunda parte del programa comentamos sobre otras teorías que históricamente han competido con el Big Bang. En particular resaltamos la Teoría del Universo en Estado Estacionario que a mediados del siglo pasado estipulaba que la densidad de materia el en Universo se mantenía constante por la creación de materia en el medio intergaláctico. Eventualmente las evidencias no la apoyaron. Otras teorías que mencionamos son la de la “Luz Cansada” de Fritz Zwicky, la que postula la existencia de múltiples Universos (Multiversoso), la que dice que nuestro Universo puede ser el resultado de la formación de un hoyo negro en una cuarta dimensión, la Cosmología Cíclica Conformal de Penrose, y otras más. Además de nuestra sección semanal de noticias, ofrecemos también nuestra sección de “Los Premios de Obsesión por el Cielo” en donde presentamos los premios ‘Constelación’ y ‘Movimiento Retrógrado’ a las noticias astronómicas más y menos relevantes, respectivamente, del mes de febrero del 2020. Esperamos que disfruten del programa.

La nave de la imaginación hace su último viaje para explorar uno de los mayores misterios del universo: la energía oscura. Conoceremos a uno de los mayores héroes desconocidos de la ciencia, Fritz Zwicky, cuya predicción sobre las supernovas ha allanado el camino para nuestra mayor comprensión de la energía oscura, la fuerza desconocida del universo que supera a la gravedad a mayor escala. En nuestro último viaje, descubrimos el mensaje romántico incrustado en disco de oro Interestelar de la Voyager y contemplaremos la experiencia espiritual de la vida en la Tierra mientras nuestro viaje cósmico concluye con la inolvidable meditación de Carl Sagan, el punto azul pálido.

La nave de la imaginación hace su último viaje para explorar uno de los mayores misterios del universo: la energía oscura. Conoceremos a uno de los mayores héroes desconocidos de la ciencia, Fritz Zwicky, cuya predicción sobre las supernovas ha allanado el camino para nuestra mayor comprensión de la energía oscura, la fuerza desconocida del universo que supera a la gravedad a mayor escala. En nuestro último viaje, descubrimos el mensaje romántico incrustado en disco de oro Interestelar de la Voyager y contemplaremos la experiencia espiritual de la vida en la Tierra mientras nuestro viaje cósmico concluye con la inolvidable meditación de Carl Sagan, el punto azul pálido.

Haben wir die Gravitation falsch verstanden? Muss sie modifiziert werden und löst das vielleicht auch das Problem der dunklen Materie? Und was hat es mit MOND auf sich? Antworten gibt es in der in der neuen Folge des Sternengeschichten-Podcasts.

W 1933 roku astronom Fritz Zwicky zauważył, że galaktyki wchodzące w skład gromady Coma poruszają się znacznie szybciej niż powinny, biorąc pod uwagę masę tej gromady wywnioskowaną na podstawie jej obserwowanej jasności. Zwicky doszedł zatem do wniosku, że większość materii budującej gromadę Coma nie świeci - jest ciemna. To początek pojęcia ciemnej materii w fizyce i astronomii. W czasie wykładu zostanie wyjaśnione, jaka była ewolucja tego pojęcia, czym może być i czym nie może ciemna materia, dlaczego jest ona tak ważna i budzi takie zainteresowanie, jak jej szukać oraz jakie są z nią związane kontrowersje.

#otd in 1937 Swiss astronomer Fritz Zwicky coined the term SUPERNOVA in a paper about neutron stars. He later coined the term NUCLEAR GOBLINS.  --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app

Kann Licht müde werden? Das haben zumindest die Wissenschaftler behauptet, die nicht akzeptieren wollten, dass sich das Universum ausdehnt. Worum es bei der "Lichtermüdung" geht und warum Licht doch nicht müde wird, erfahrt ihr heute im Podcast.

517: Fritz Zwicky and the Zwicky Transient Facility Astronomy Cast 517: Fritz Zwicky and the Zwicky Transient Facility by Fraser Cain & Dr. Pamela Gay

One of the most influential astronomers in the 20th Century was Fritz Zwicky. He had his hand in the discovery of dark matter, gravitational lensing, supernovae and neutron stars. And he also worked on a few more controversial ideas like, uh, tired light. Let's learn more about Zwicky.

This week we look at the work of Vera Rubin and Fritz Zwicky that led to the idea that roughly 85% of the matter in the universe can't be detected except by the gravitational influence on the matter we can see.  We also consider alternative explanations and examine the evidence in favor of Dark Matter.

Tyson describe el descubrimiento de los rayos cósmicos por Victor Hess mediante globos lanzados a gran altitud. Luego relata como el astrónomo suizo Fritz Zwicky, estudiando las supernovas, postuló que tenían en ellas su origen. Luego cuenta como Vera Rubin observó que la rotación de las estrella en las galaxias no seguían la velocidad esperada lo que le llevó a postular la existencia de la Materia Oscura. Posteriormente se descubrió la Energía Oscura para explicar la expansión acelerada del universo. Luego Tyson nos describe el viaje interesterlar de las dos sondas Voyager, que llevan un rótulo de oro que establece la posición de la tierra dentro del universo. Tyson concluye la serie enfatizando el mensaje de Carl Sagan de la condición humana en la inmensidad del Cosmos y exhorta a los espectadores a continuar explorando y descubriendo lo que el universo nos ofrece.

Tyson describe el descubrimiento de los rayos cósmicos por Victor Hess mediante globos lanzados a gran altitud. Luego relata como el astrónomo suizo Fritz Zwicky, estudiando las supernovas, postuló que tenían en ellas su origen. Luego cuenta como Vera Rubin observó que la rotación de las estrella en las galaxias no seguían la velocidad esperada lo que le llevó a postular la existencia de la Materia Oscura. Posteriormente se descubrió la Energía Oscura para explicar la expansión acelerada del universo. Luego Tyson nos describe el viaje interesterlar de las dos sondas Voyager, que llevan un rótulo de oro que establece la posición de la tierra dentro del universo. Tyson concluye la serie enfatizando el mensaje de Carl Sagan de la condición humana en la inmensidad del Cosmos y exhorta a los espectadores a continuar explorando y descubriendo lo que el universo nos ofrece.

SI TE GUSTA ESTE AUDIO, NO TE OLVIDES DE PONER UN "ME GUSTA" La existencia de la materia oscura quedó confirmada a partir de 1974, aunque hasta 1980 aun se la llamaba "masa perdida" ("missing mass") o "masa no visible" ("unseen mass"). Fritz Zwicky usó por primera vez el término "materia oscura" ("dunkle Materie" en alemán) en 1933, pero las estimaciones de la masa del disco galáctico de la Vía Láctea por James Jeans (1922) y Jacobus Kapteyn (1922) ya habían indicado la presencia de "estrellas oscuras" (tres estrellas tan poco luminosas que no se veían por cada una que era visible), algo que Jan Hendrik Oort confirmó en 1932. Nos cuenta la historia de la materia oscura galáctica Virginia Trimble (Departamento de Física y Astronomía, Universidad de California) en "The discovery of dark matter," DV2010 -- Darkness Visible, IoA Cambridge, August 2-6 2010. Los científicos no saben en realidad lo que es, pero la materia oscura y la energía oscura forman el 96% del Universo. La materia oscura está presente en todas partes. Atraviesa todo lo que conocemos en la Tierra a miles de millones de partículas por segundo

SI TE GUSTA ESTE AUDIO, NO TE OLVIDES DE PONER UN "ME GUSTA" La existencia de la materia oscura quedó confirmada a partir de 1974, aunque hasta 1980 aun se la llamaba "masa perdida" ("missing mass") o "masa no visible" ("unseen mass"). Fritz Zwicky usó por primera vez el término "materia oscura" ("dunkle Materie" en alemán) en 1933, pero las estimaciones de la masa del disco galáctico de la Vía Láctea por James Jeans (1922) y Jacobus Kapteyn (1922) ya habían indicado la presencia de "estrellas oscuras" (tres estrellas tan poco luminosas que no se veían por cada una que era visible), algo que Jan Hendrik Oort confirmó en 1932. Nos cuenta la historia de la materia oscura galáctica Virginia Trimble (Departamento de Física y Astronomía, Universidad de California) en "The discovery of dark matter," DV2010 -- Darkness Visible, IoA Cambridge, August 2-6 2010. Los científicos no saben en realidad lo que es, pero la materia oscura y la energía oscura forman el 96% del Universo. La materia oscura está presente en todas partes. Atraviesa todo lo que conocemos en la Tierra a miles de millones de partículas por segundo

Fritz Zwicky is often described as a genius, but also as a caustic figure. His insights into astrophysics are downright baffling, but his prickly interactions with peers were problematic to his career and his place in history. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

AFTERBUZZ TV — Cosmos: A Spacetime Odyssey edition, is a weekly "after show" for fans of Fox's Cosmos: A Spacetime Odyssey. In this episode host JC Rubio breaks down the episode in which the first season concludes with a profile of Swiss astronomer Fritz Zwicky (1898-1974), a pioneer in the study of supernovas, neutron stars and dark matter in the universe; and a rumination on Carl Sagan's best seller "Pale Blue Dot." There to help JC are co-hosts Scott Moore, Autumn Chiklis, and Dillon Chance. It's Cosmos: A Spacetime Odyssey "Unafraid Of The Dark" podcast! Follow us on http://www.Twitter.com/AfterBuzzTV "Like" Us on http://www.Facebook.com/AfterBuzzTV For more of your post-game wrap up shows for your favorite TV shows, visit http://www.AfterBuzzTV.com Learn more about your ad choices. Visit megaphone.fm/adchoices

AFTERBUZZ TV — Cosmos: A Spacetime Odyssey edition, is a weekly "after show" for fans of Fox's Cosmos: A Spacetime Odyssey. In this episode host JC Rubio breaks down the episode in which the first season concludes with a profile of Swiss astronomer Fritz Zwicky (1898-1974), a pioneer in the study of supernovas, neutron stars and dark matter in the universe; and a rumination on Carl Sagan's best seller "Pale Blue Dot." There to help JC are co-hosts Scott Moore, Autumn Chiklis, and Dillon Chance. It's Cosmos: A Spacetime Odyssey "Unafraid Of The Dark" podcast! Follow us on http://www.Twitter.com/AfterBuzzTV "Like" Us on http://www.Facebook.com/AfterBuzzTV For more of your post-game wrap up shows for your favorite TV shows, visit http://www.AfterBuzzTV.com

Back in the early 1930s, astronomer Fritz Zwicky discovered a problem. Zwicky studied galaxy clusters, which can contain hundreds to thousands of galaxies loosely bound together by gravity. While examining one such cluster, he realized that the visible material within the galaxies did not have enough mass to hold the cluster together. As a result, he inferred that some dark, unseen matter must exist. Decades later, Ramanath Cowsik theorized about the source of this extra gravitational force. Cowsik, who now directs the McDonnell Center for the Space Sciences, describes the history of dark matter and shares how his discovery changed the way scientists think about this invisible force in the universe.

Transcript -- Fritz Zwicky was a Swiss astronomer who discovered Dark Matter in the Universe. But what's the matter with dark matter?

Fritz Zwicky was a Swiss astronomer who discovered Dark Matter in the Universe. But what's the matter with dark matter?

Transcript -- Fritz Zwicky was a Swiss astronomer who discovered Dark Matter in the Universe. But what's the matter with dark matter?

Fritz Zwicky was a Swiss astronomer who discovered Dark Matter in the Universe. But what's the matter with dark matter?

Transcript: In 1934 American astronomers Walter Baade and Fritz Zwicky speculated that the result of a supernova explosion might be a formation of what they called a neutron star. If the burned out core of a massive star is more than 1.4 times the mass of the Sun, degeneracy pressure of the electrons is not sufficient to support the core against further gravitational collapse. The collapse occurs. Electrons and protons coalesce to form neutrons. This is a reversal of the normal neutron decay process to produce electrons and protons. In this form of the material the neutrons with no electrical charge are packed close like eggs in a crate, and the density rises to a phenomenal 1017 kilograms per meter cubed. Pure neutron material is the density of an atomic nucleus, but this is an entire star. A thimble full of this material brought back to Earth would weight 100 million tons.