Podcasts about stellar evolution

# Exploring Cosmic Wonders: Latest Discoveries from the James Webb Space Telescope - Cosmic Roundup PodcastJoin host "The Space Cowboy" as he unveils groundbreaking discoveries from NASA's James Webb Space Telescope in this captivating episode of Cosmic Roundup. Learn about the stunning planetary nebula NGC 1514, the most distant spiral galaxy ever discovered (nicknamed "Dragon Galaxy"), and Neptune's magnificent auroras captured in unprecedented detail. The episode features exciting revelations about early galaxy rotation patterns that challenge our understanding of cosmic origins, plus direct images of multiple gas giants in the HR 8799 system. Discover how Webb is revolutionizing astronomy by observing star formation, tracking potentially hazardous asteroids, and searching for biosignatures on exoplanets. Perfect for astronomy enthusiasts, science lovers, and anyone fascinated by the mysteries of our universe, this comprehensive roundup showcases how Webb's infrared vision is transforming our understanding of cosmic evolution and our place in the universe.

# Exploring the Cosmos: Latest James Webb Space Telescope Discoveries with The Space CowboyJourney through the universe's most fascinating recent discoveries in this captivating episode of Cosmic Frontiers. Join The Space Cowboy as he breaks down groundbreaking James Webb Space Telescope observations that are revolutionizing our understanding of space.Discover the unprecedented footage of a planet being slowly consumed by its star—not in one gulp as previously thought, but in a millions-of-years death spiral that's forcing scientists to reconsider our own solar system's fate. Learn about early galaxies with synchronized rotation patterns that suggest our universe itself might have been born spinning, potentially supporting mind-bending theories about cosmic origins.The episode also covers Webb's stunning revelations about unexpectedly bright hydrogen emissions from ancient galaxies, Neptune's magnificent auroras, dramatic protostellar jets, and detailed measurements of the scorching exoplanet Trappist-1b. Perfect for astronomy enthusiasts, science lovers, and anyone fascinated by the mysteries of our universe, this accessible deep dive into cosmic wonders will expand your perspective on space exploration and what Webb's revolutionary technology continues to unveil about our cosmic neighborhood.

# Discover the Universe's Earliest Secrets with The Space Cowboy PodcastJourney through cosmic frontiers with The Space Cowboy as he unpacks groundbreaking James Webb Space Telescope discoveries in this captivating episode. Learn about JADES GS z13-1, an unexpectedly bright early universe galaxy challenging our understanding of cosmic evolution just 330 million years after the Big Bang.Explore our solar system's hidden wonders, from Neptune's newly discovered auroras to the HR 8799 planetary system where Webb has detected carbon dioxide, water, and methane in exoplanet atmospheres—potential signatures of life. The episode reveals how massive planets like WD 1856 b surprisingly orbit ancient stars, defying conventional formation theories.Dive into trans-Neptunian objects—cosmic time capsules preserving our solar system's history—and understand how Webb is addressing the Hubble tension mystery. Perfect for astronomy enthusiasts, space exploration fans, and anyone curious about our cosmic origins and humanity's place in the universe.

What can gamma rays tell us about supernovae and galaxy formation? Neil deGrasse Tyson and co-host Chuck Nice sit down with astrophysicist Tim Paglione to explore high-energy cosmic phenomena, gamma rays, and the extreme events that create them.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here:https://startalkmedia.com/show/the-extreme-universe-with-tim-paglione/Thanks to our Patrons Alexander Storts, Chris Henderson, Micheal Mayo, Jose Lotzin, Rebecca Noland, Scientific Panda, Sander Bergheim, Aubrey Loftus, John Leon, Jaquelin Butkovic, Jesse McIntyre, Kelly Sheffield, Kaseim カセイム, Bradley Westbrook, Chris Rassette, Aquahood, BA_MPH_JD_PhD-aspirant, Ravenwingfeather, Kaity Sturgell, Norma Bazan, Mickey Brumfield, lamar Gibson, Bong Bong, Andrew Hayes, Billy Madison, Bruce Muller, parker martindale, James Pope, Carrie Williams, Robert Lester, Mike Bundy, and My Pug is a Bug for supporting us this week. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.

With Dr. Roger Romani (Stanford University):NASA's Fermi Gamma-ray Space Telescope has revealed a violent high-energy universe full of stellar explosions, black hole jets, and pulsing stars.  These cosmic objects are often faint when observed with visible light, but glow bright with gamma rays.   Dr. Romani describes the quest to discover the true nature of the most puzzling of these gamma-ray sources.  Several turn out to be a kind of bizarre star corpse called a 'black widow' pulsar -- where a dead star has a companion that it is slowly destroying.This is a talk from 2014, but it is still relevant today.

Astrophysicist Risa Wechsler studies the evolution of the universe. She says that our understanding of how the universe formed and how it will change over time is changing as new technologies for seeing and measuring space come online, like a new high-resolution camera that can quickly map the full sky to see everything that moves, or new spectrographs that will map the cosmos in 3D and enable us to get new clues about the elusive dark matter. You can't understand the universe or our presence in it until you understand dark matter, Wechsler tells host Russ Altman on this episode of Stanford Engineering's The Future of Everything podcast.Episode Reference Links:Risa Wechsler: WebsiteStanford Profile: WebsiteSLAC National Accelerator LaboratoryLegacy Survey of Space and Time (LSST) | Rubin ObservatoryDark Energy Spectroscopic Instrument (DESI)The SAGA SurveyConnect With Us:Episode Transcripts >>> The Future of Everything WebsiteConnect with Russ >>> Threads or Twitter/XConnect with School of Engineering >>> Twitter/XChapters:(00:00:00) IntroductionRuss Altman introduces guest Professor Risa Wechsler, professor of physics, particle physics, and astrophysics from Stanford University.(00:01:46) Tools for Studying the UniverseTechnologies and methods used to study galaxies and the universe, including the Rubin Observatory's Legacy Survey of Space and Time.(00:04:37) Understanding Maps of the UniverseThe concept of mapping the universe in two and three dimensions, the significance of redshifts, and the application of spectroscopy.(00:08:56) The Structure and Scale of the UniverseThe age, expansion, and overall structure of the universe, touching on its isotropic nature and clumpiness on different scales.(00:12:23) Delving into Galaxy Formation and EvolutionAn in-depth look at galaxy formation, the role of dark matter, and how galaxies have evolved over billions of years.(00:14:49) The Diversity of Galaxies and Their StructuresThe various types of galaxies, including satellite and dwarf galaxies, and how they form and evolve differently.(00:18:56) Dark Matter and Dark EnergyThe fundamental aspects of dark matter and dark energy, their role in the universe, and the challenges in studying them.(00:22:32) Mapping the Universe with Modern ToolsHow current technologies and methods contribute to our understanding of the universe's expansion and structure(00:24:57) Applying Cosmic UnderstandingThe SAGA Survey and its implications for understanding the Milky Way in a broader cosmic context.(00:29:29) Conclusion Connect With Us:Episode Transcripts >>> The Future of Everything WebsiteConnect with Russ >>> Threads or Twitter/XConnect with School of Engineering >>> Twitter/X

Today's Song of the Day is “Horror of it All” from Aaron Lee Tasjan's album Stellar Evolution, out now.Aaron Lee Tasjan will be performing at The Current's Happy Hour on Thursday, May 30 at Surly Brewing Co.

Aaron Lee Tasjan has a pretty simple writing process: he gets up around 8am, has a glass of water, and pets his cat. Then he writes. But not every day. "I only write when my body tells me to, when I can go off yesterday's fumes," he told me. And in one of the best rituals I've ever heard, Tasjan always writes with a pencil--but never uses the eraser. "I hate erasers," he says.Tasjan lives in Nashville, where the Frist Art Museum serves as a tremendous source of inspiration for his songs. His new album Stellar Evolution is out now on Blue Elan Records.

Today's Song of the Day is “Horror of It All” from Aaron Lee Tasjan's album Stellar Evolution, out April 12.

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

Join us on a journey through the wonders of the universe! Tune in to 'The Cosmos' podcast and explore the mysteries of space, time, and everything in between. Click 'Subscribe' now and embark on an out-of-this-world adventure with us. https://www.solgood.org - Check out our Streaming Service for our full collection of audiobooks, podcasts, short stories, & 10 hour sounds for sleep and relaxation at our website The Cosmos Podcast, Astronomy, Astrophysics, Space Exploration, Scientific Discoveries, Cosmic Wonders, Galaxies, Black Holes, Planetary Science, Astronomy News, Extraterrestrial Life, Stellar Evolution, Universe Mysteries, Astronomy Facts, Astronomy Education, Space Technology, Space Mission Updates, The Cosmos in Depth, Astronomy for Beginners, Cosmic PerspectivesThis show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5961729/advertisement

with Dr. Eugene Chiang (University of California, Berkeley)June 21, 2023We now know that our solar system is but one of countless others. Where did all these planets come from? What are their fates, and ours? Dr. Chiang describes the life cycle of planets, how they are born and die, and how they are born again. The story combines the latest observations from a wide range of telescope with our evolving theoretical understanding of the role planets play in the development of the cosmos.

Timestamps: 0:00 Intro: Webb, Apollo 8 and Hubble 30:00 Webb: The Man and the Telescope 52:15 Webb's Historical Context and Predecessors 1:32:50 The Long Road of Developing Webb 2:06:19 The Inventions Powering Webb 3:00:29 Results Pt 1: First Images (misnumbered in video) 3:56:57 Results Pt 2: Cosmic Dawn: The earliest stars and galaxies 4:21:49 Results Pt 3: Stellar Evolution 4:53:26 Results Pt 4: Exoplanets and searching for Alien Life 5:31:00 DART Impact Footage 5:35:04 Future Telescopes after Webb   The James Webb Space Telescope, or JWST, is an $11 billion origins machine. It was engineered to discover the first stars that sparked the cosmic dawn and exoplanets that may harbor alien life. Let's find out what this machine is capable of. Thanks for watching. I hope you enjoy this one guys. -Rich    Credits: https://en.wikipedia.org/wiki/James_Webb_Space_Telescope NASA: https://www.flickr.com/photos/nasawebbtelescope/albums ESA: https://www.esa.int/ESA_Multimedia/Images ESO: https://www.eso.org/public/videos/archive/category/cosmology/ https://webbtelescope.org Interactive Sky: https://web.wwtassets.org/specials/2022/jwst-release/ https://www.webbcompare.com/ https://esawebb.org/videos/archive/category/transitions/ Webb's Development: 1981 Deacdal Survey: https://nap.nationalacademies.org/download/549 https://jwst-ngst.ucolick.org/assets/docs/NGST_The_Early_Days_of_JWST_STScI_Newsletter-Link.pdf https://archive.org/details/nextgenerationsp00bely/page/n1 1991 Decadal Survey: https://nap.nationalacademies.org/catalog/1634/the-decade-of-discovery-in-astronomy-and-astrophysics] HST & Beyond: https://www.stsci.edu/files/live/sites/www/files/home/hst/documentation/_documents/HSTandBeyond.pdf 2001 Decadal Survey: https://nap.nationalacademies.org/catalog/9839/astronomy-and-astrophysics-in-the-new-millennium https://www.nature.com/articles/440140a https://spacepolicyonline.com/news/mikulski-to-jwst-workforce-i-saved-you-from-the-tea-party/ https://blogs.scientificamerican.com/observations/threat-of-james-webb-space-telescope-cancellation-rattles-astronomy-community/ https://www.news9live.com/science/looking-back-in-time-development-and-delays-of-the-james-webb-space-telescope-142428 Mirrors: Mirror Production: https://youtu.be/Y_U_MrWcCnE Comprehensive video on mirrors: https://www.youtube.com/watch?v=v1J3208E8jU Full Mirror OTE in facility: https://youtu.be/PhGfgREoBj4 Light path: https://www.youtube.com/watch?v=y9Z2GbFJWmo General OTE animations: https://www.youtube.com/watch?v=LwkeoA-0SFA Deployment sequence: https://webbtelescope.org/contents/articles/how-big-is-webb https://space.stackexchange.com/questions/59726/why-didnt-jwst-include-any-sensors-capable-of-blue-and-green-visible-wavelength https://www.theregister.com/2022/07/26/james_webb_and_halleys_comet/ Cosmology with Webb: "Cosmological Distance Calculator" (SV Pilipenko): https://arxiv.org/pdf/1303.5961.pdf David Butler (youtube channel I highly recommend for astronomy content): https://www.youtube.com/@howfarawayisit https://www.quantamagazine.org/why-nasas-james-webb-space-telescope-matters-so-much-20211203/ (By Natalie Wolchover) https://www.scientificamerican.com/article/jwsts-first-glimpses-of-early-galaxies-could-break-cosmology/ (By Jonathan O'Callaghan) https://cns.utexas.edu/news/widest-view-of-early-universe-hints-at-galaxy-among-the-earliest-ever-detected Alex Filippenko and Lex Fridman: https://youtu.be/thnlEkcXr5w Stars and Exoplanets with Webb: https://www.quantamagazine.org/webb-space-telescope-snaps-its-first-photo-of-an-exoplanet-20220901/ https://www.space.com/james-webb-space-telescope-trappist-planets DART impact: https://youtu.be/yaRTBfcHvgo Webb Scientific Papers: https://arxiv.org/abs/2208.01611 https://iopscience.iop.org/article/10.3847/2041-8213/ac90ca: https://ui.adsabs.harvard.edu/abs/2022arXiv221105792F/abstract https://ui.adsabs.harvard.edu/abs/2022arXiv221103896F/abstract https://iopscience.iop.org/article/10.3847/1538-3881/aca163#ajaca163f2 El Gordo: https://arxiv.org/pdf/2210.06514.pdf) Other sources used: https://en.wikipedia.org/wiki/Earthrise Elon Musk "FULL SEND" Interview: https://youtu.be/fXS_gkWAIs0 #space #documentary #sciencefacts #science #letsfindout #ASMR #jwst #astronomy ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ► If you'd like to show support for the channel: ▸ Patreon (monthly donations): https://www.patreon.com/LetsFindOutASMR ▸ PayPal (one-time donation): https://www.paypal.me/LetsFindOutASMR or letsfindoutASMR@gmail.com ▸ Amazon link helps the channel: https://amzn.to/2LnNXd6 ▸ My Amazon Wishlist: http://a.co/9vUJ8eF ► Say Hello: ▸

Dr. Brandt: https://personal.psu.edu/wnb3/Dr. Niel Brandt is the Verne M. Willaman Professor of Astronomy & Astrophysics, and Professor of Physics at The Pennsylvania State University. Dr. Brandt is joining us today to speak specifically about his outreach through summer teacher workshops as well as his primary research interests which include: The growth of supermassive black holes over cosmic timeBlack-hole vs. galaxy connectionsDeep cosmological multi-wavelength surveysSupermassive black-hole winds and feedback into galaxiesSample-based studies of active galactic nucleiExtreme active galactic nuclei as toolsX-ray astronomy and high-energy astrophysicsDeep, wide, and fast cosmic surveysThis summer's workshop, “The Lives and Deaths of Stars” will be held on July 17-21st at The Pennsylvania State University. https://sites.psu.edu/psiwa/#podcast #science #spaceSupport the Show.Check out the video version of this podcast on the Cosmos Safari YouTube Channel www.youtube.com/c/cosmossafari

Stellar evolution, SN explosion, and nucleosynthesis by Keiichi Maeda. on Wednesday 12 October Massive stars evolve toward the catastrophic collapse of their innermost core, producing core-collapse supernova (SN) explosions as the end products. White dwarfs, formed through evolution of the less massive stars, also explode as thermonuclear SNe if certain conditions are met during the binary evolution. Inflating opportunities in transient observations now provide an abundance of data, with which we start addressing various unresolved problems in stellar evolution and SN explosion mechanisms. In this chapter, we overview the stellar evolution channels toward SNe, explosion mechanisms of different types, and explosive nucleosynthesis. We then summarize observational properties of SNe through which the natures of the progenitors and explosion mechanisms can be constrained. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.00326v2

Fundamental parameters for dEB SB2 binary system J064726 39+223431 6 A new challenge for stellar evolution models by Mikhail Kovalev et al. on Monday 26 September We present a study of eclipsing binary J064726.39+223431.6 using spectra from the LAMOST-MRS and TESS photometry. We use full-spectrum fitting to derive radial velocities and spectral parameters: ${T_{rm eff}}_{A,B}=6177,,5820$ K, $v sin{i}_{A,B}=59,,50~kms$ and ${rm [Fe/H]}_{A,B}=-0.19$ dex. The orbital solution and light curve analysis suggest that it is a close pair of fast rotating stars on circular orbit. We measure their masses to be $M_{A,B}=1.307pm0.007,, 1.129pm0.005,M_odot$ and their radii to be $R_{A,B}=1.405pm0.052,, 1.219pm0.060,R_odot$ resulting in surface gravities of $log{g}_{A,B}=4.259pm0.033,,4.319pm0.042$ (cgs). Theoretical models cannot match all of these properties, predicting significantly higher ${T_{rm eff}}$ for a given metallicity. Derived age of the system 1.56 Gyr indicates that both components are younger than Sun. J064726.39+223431.6 is a good candidate for high-resolution spectroscopic analyses. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.12548v1

Revisiting the Schönberg-Chandrasekhar limit in post main sequence stellar evolution by Shaswata Chowdhury et al. on Sunday 18 September The Sch"{o}nberg-Chandrasekhar limit in post main sequence evolution for stars of masses in the range $1.4lesssim M/M_{odot}lesssim 6$ gives the maximum pressure that the stellar core can withstand, once the central hydrogen is exhausted. It is usually expressed as a quadratic function of $1/alpha$, with $alpha$ being the ratio of the mean molecular weight of the core to that of the envelope. Here, we revisit this limit in scenarios where the pressure balance equation in the stellar interior may be modified, and in the presence of small stellar pressure anisotropy, that might arise due to several physical phenomena. Using numerical analysis, we derive a three parameter dependent master formula for the limit, and discuss various physical consequences. As a byproduct, in a limiting case of our formula, we find that in the standard Newtonian framework, the Sch"{o}nberg-Chandrasekhar limit is best fitted by a polynomial that is linear, rather than quadratic, to lowest order in $1/alpha$. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.07389v1

Revisiting the Schönberg-Chandrasekhar limit in post main sequence stellar evolution by Shaswata Chowdhury et al. on Sunday 18 September The Sch"{o}nberg-Chandrasekhar limit in post main sequence evolution for stars of masses in the range $1.4lesssim M/M_{odot}lesssim 6$ gives the maximum pressure that the stellar core can withstand, once the central hydrogen is exhausted. It is usually expressed as a quadratic function of $1/alpha$, with $alpha$ being the ratio of the mean molecular weight of the core to that of the envelope. Here, we revisit this limit in scenarios where the pressure balance equation in the stellar interior may be modified, and in the presence of small stellar pressure anisotropy, that might arise due to several physical phenomena. Using numerical analysis, we derive a three parameter dependent master formula for the limit, and discuss various physical consequences. As a byproduct, in a limiting case of our formula, we find that in the standard Newtonian framework, the Sch"{o}nberg-Chandrasekhar limit is best fitted by a polynomial that is linear, rather than quadratic, to lowest order in $1/alpha$. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.07389v1

Support independent media at our Patreon: https://bit.ly/3lcAasB Too often we encounter science with the mindset that everything has been figured out, that the big challenges are all behind us, and that the last thing to do is to dot some i's and cross some t's. Not so, says NASA's Dr. Michelle Thaller, who sees the story of star birth, life, and death as an unfinished puzzle. We talk about the angular momentum paradox, the pitfalls of steady-state astronomy, and an integrated future, where gravity is just one force among many that creates the celestial sky. #NASA #Astronomy #Paradigmshift Check our short-films channel, @DemystifySci: https://youtu.be/1OCL5Lq8m6s Join the mailing list https://bit.ly/3v3kz2S PODCAST INFO: Anastasia completed her PhD studying microbial communication at Columbia University. When not talking to brilliant people or making movies, she spends her time painting and exploring the woods. Michael Shilo also did his PhD at Columbia studying the elastic properties of molecular water. When he's not in the film studio, he's exploring sound in music. They are both freelance professors at various universities. Blog: http://DemystifySci.com/blog -RSS: https://anchor.fm/s/2be66934/podcast/rss -Donate: https://bit.ly/3wkPqaD -Swag: https://bit.ly/2PXdC2y SOCIAL: - Discord: https://discord.gg/MJzKT8CQub - Facebook: https://www.facebook.com/groups/DemystifySci - Instagram: https://www.instagram.com/DemystifySci/- Twitter: https://twitter.com/DemystifySci MUSIC: -Shilo Delay: https://g.co/kgs/oty671 --- Support this podcast: https://anchor.fm/demystifying-science/support

Dr. Annapurni Subramaniam serves as the Director of the Indian Institute of Astrophysics, Bangalore. Her research work focuses on Star Clusters, Stellar Evolution and Population in Galaxies and Magellanic Clouds. In this episode, Dr. Annapurni speaks to us about her childhood fascination with the night sky, her thoughts on a long-term vision for Scientific Research in India, and balancing leadership and contributor roles in projects with grace and humility.

In this illustrated talk, Dr. Burgasser explains what happens when a newly forming star doesn't have "what it takes" to produce energy in its core in an ongoing way.  This results in "failed stars" or brown dwarfs -- objects that were predicted in theory, but only discovered in the 1990's.   Today, many thousands of these brown dwarfs are known, spanning a wide range of temperatures and masses, and occupying a unique niche at the intersection of stars and planets. Dr. Burgasser discusses how such faint objects are discovered, highlights their exceptional properties, and describes what this (mostly) invisible population can tell us about the formation and history of our Milky Way Galaxy.   Recorded March 9, 2022.Adam Burgasser is a professor of Physics at the University of California,  San Diego, and an astrophysicist who studies the coldest stars, brown dwarfs, and extrasolar planets. Prof. Burgasser defined the “T spectral class” of brown dwarfs as a graduate student; and is one of the co-discoverers of the TRAPPIST-1 exoplanetary system, a system of seven Earth-sized planets orbiting an object at boundary of the star/brown dwarf divide. 

Allegedly, extraterrestrials from nearby stars in the Milky Way Galaxy, and from other galaxies in the observable Universe, are visiting Earth. From a planetary scientist's perspective, however, there is a convergence of many factors that challenge the extraterrestrial hypothesis of UFO phenomena. Regardless of whether or not technologically intelligent life exists outside of our Earth, the laws of physics and space science apply to extraterrestrials as well. Topics for this presentation will include: Understanding the Universe and Stellar Evolution; Alleged Extraterrestrials in our Backyard; ET Homes: Bad Real Estate; Parallels of Alleged ETs and Human Biology; The Speed of Light and why it Matters; Limits of Interstellar and Intergalactic Travel; Time Dilation and the “Alien Twins Paradox”; Tough Questions for the UFO Culture.This presentation is from the 2014 Ozark Mountain UFO Conference.FOLLOW US ON:Facebook: https://goo.gl/rwvBfwInstagram: https://www.instagram.com/ozarkmtpubTwitter: https://goo.gl/LunK5DWebsite: https://goo.gl/2d5cX4ASSOCIATED LINKS:Ozark Mountain Publishing, Inc.: https://goo.gl/xhgoAPQuantum Healing Hypnosis Academy: https://goo.gl/64G7RD

Playlist No 197 . Six new names to add to the list, two from Cyclicaldreams label, Mind phaser & Francisco Nicosia, the former a cerebral and emotional exploration of time and space. Gifted female Serbian producer Lydia & Singto Conley beautiful symphonic scores with soft electronic piano melodies. The most deeply relaxing calming music by Chuck Wild is known as Liquid Mind, & dark mysterious ambient sounds on the collaborative album by Subterranean Source. Group Page: https://www.facebook.com/groups/sequencesmagazine/ Website: www.sequencesmagazine.com Email: sequencesemma@gmail.com michael.garlick@icloud.com Podcasts: https://itunes.apple.com/au/podcast/sequences-magazine-podcast/id500441651 https://soundcloud.com/mick-garlick Latest edition on the German radio show: Modul303 http://modul303.com/ Player FM: https://player.fm/series/sequences-magazine Listennotes: https://www.listennotes.com/podcasts/sequences-magazine-sequences-electronic-6qYJ3ndPT_z/ Amazon: all editions from no 44 to the latest. https://www.amazon.com/Sequences-Magazine/dp/B08K589BVS Owltail https://www.owltail.com/podcast/KuoKr-Sequences-Magazine/best-episodes Podbay https://podbay.fm/p/sequences-magazine Ubook https://www.ubook.com/podcast/259475/sequences-magazine Podtail https://podtail.com/fr/podcast/sequences-magazine/ Playlist No197 01.56 The Fourth Dimension Project ‘Mirror Dimension' (album Stardust) https://fourthdimension1.bandcamp.com 08.56 The Fourth Dimension Project ‘Dream Of Stars' 13.30 Wavestar II ‘A Gesture' (album TWO) www.groove.nl 20.29 Michael Bruckner ‘Backspin' (album Recycled Life) www.cyclicaldreams.bandcamp.com 26.32 Michael Bruckner ‘Gentle Rotation (Version 2)' 36.28 Francisco Nicosia ‘Dios, en los principios y los fines ‘ (album Time) www.cyclicaldreams.bandcamp.com 46.19 Francisco Nicosia ‘La primer ciudad de Marte' 53.48 Peter Mergener ‘Astronaut' (album Astronaut) www.bscmusic.com 59.03 Peter Mergener ‘Cosmic Radiation' 01.01.41 Jim Ottaway ‘Alien Star' (album 01.09.16 Jim Ottaway ‘Dark Matter In Distorted Starlight' 01.17.11 Harmonic Resonance Recordings ‘Pole Star' (album Infinite Realms) www.hrresonance.bandcamp.com 01.27.09 Erik Wøllo ‘Winter Tide Part 5' (album Winter Tide-Live at Soundquest Fest 2021) www.projekt.com 01.31.06 Erik Wøllo ‘Winter Tide Part 6' 01.35.58 LYDIA ‘Emanation' (album Emanation) www.lydia-music.bandcamp.com 01.38.19 LYDIA ‘Time' 01.43.21 Singto Conley ‘Blooming' (album Blooming) www.singtoconley.bandcamp.com 01.47.32 Singto Conley feat: Moon Jelly ‘Remember' 01.52.31 Lisa Bella Donna ‘Morning Light Part 3' (album Morning Light) ***www.blueskymusic.com 02.03.04 Subterranean Source feat. Exit in Grey ‘Oblivion' (album Ellipsis) *** www.winter-light.bandcamp.com 02.14.07 Markus Reuter ‘Trial In Tears' (album Anchor and Burden) https://markusreuter.bandcamp.com 02.22.34 Nigel Mullaney ‘I Talk To The Skies' (album Turning Point) www.DIN.org 02.28.09 Nigel Mullaney ‘Lost At Sea' 02.33.27 Ash Ra ‘Shuttlecock Live' (album The Private Tapes Vol 2) *** www.manikinrecords.com 02.44.46 Andy Pickford ‘Phoenix Rising' (album Vanishing Point) www.andypickford1.bandcsamp.com 02.50.04 Andy Pickford ‘Don't Look Now' 02.57.15 ELEON ‘Suddenly It Happened ‘(album Crossover) www.higherlevel.media 03.02.44 ELEON ‘We Fly In Dreams' 03.06.59 MindPhaser ‘Vangeliana' (album In Time Of Lockdown) www.cyclicaldreams.bandcamp.com 03.17.25 Liquid Mind ‘Letting Go' (album Musical Healthcare) www.LiquidMindMusic.com 03.26.33 Maria Warner (aka Michael Neil) ‘Main Sequence' (album Main Sequence) *** www.mariawarner.bandcamp.com 03.36.32 Maria Warner (aka Michael Neil) 'Stellar Evolution' (album Stellar Evolution) *** www.mariawarner.bandcamp.com 03.45.48 Jarguna & Ryuzen ‘Shuneiro' (album Kitsune) www.projeckt.com 03.53.46 Anantakara -Frédéric Gerchambeau ‘Citrine Valley' (Ashta) www.anantakara.bandcamp.com Edit ***

This week we're discussing stars! How they're born, what's going on inside of them, and how they die. We'll even talk about how the Earth will die, big yikes.  Listen to hear how all those white girls that say they're made of star dust are... actually right.   Find our materials and sources at clearskieswithchloe.com, and follow us on instagram @clearskieswithchloe   Support this podcast by going to patreon.com/clearskieswithchloe  

How do we know the age of stars? On this episode, Neil deGrasse Tyson and comic co-host Paul Mecurio answer fan questions about stars, black hole collisions, the speed of light, and the present crisis in cosmology.  NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free here: https://www.startalkradio.net/show/cosmic-queries-grab-bag-cosmology-crisis-with-paul-mecurio/ Thanks to our Patrons Eric Ennis, Bill Savage, Matt Schafer, Lawrence McKay, Lowell Irvin, Chris & Michael Johnson, Steve Vera, Nicole Vorisek, Logan Shanks, and Karen Larios for supporting us this week. Photo Credit: NASA/JPL-Caltech/VLA/MPIA See omnystudio.com/listener for privacy information.

Stellar evolution is the process by which a star changes over the course of time. Stellar evolution is inevitable as stars deplete their initial fuel sources. Science Boy talks about the stages of evolution of our Sun. Within the interior of stars, fusion creates new elements from the basic elements (H, He). The search for new fuel sources affects the properties of stars as they evolve. This evolution is a process that consists of many different stages with fuel consumption as the dominant life cycles of an evolving star. While this process takes billions of years as measured by human standards, the life of a star is minor in comparison to the age of the universe. The stages in the life cycle of stars are a vital part in the formation of galaxies, new stars and planetary systems. #ScienceBoy #FunTimeLab #Sun #evolution #science #astrophysics #kids #kidsshow https://youtu.be/rQFLEQ-pVeU --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app Support this podcast: https://anchor.fm/fun-time-lab/support

Multi-volume work on science edited by Francis Rolt-Wheeler. The first volume is on Astronomy written by Waldemar Kaempffert. This book briefly discusses the evolution of astronomical beliefs and the development of instruments and progress of methods in the science. It explains, further, the different astronomical laws, theories, phenomena and objects, as well as the history of these discoveries. (summary by Sienna) Get Audible: https://amzn.to/3fZZT4p Crypto Opportunities: https://bit.ly/3bB2yAu Grow your Social Following: https://bit.ly/3wJi70U ManySwap: https://bit.ly/3yGUVSP --- Support this podcast: https://anchor.fm/freeaudiobooks/support

Multi-volume work on science edited by Francis Rolt-Wheeler. The first volume is on Astronomy written by Waldemar Kaempffert. This book briefly discusses the evolution of astronomical beliefs and the development of instruments and progress of methods in the science. It explains, further, the different astronomical laws, theories, phenomena and objects, as well as the history of these discoveries. (summary by Sienna) Get Audible: https://amzn.to/3fZZT4p Crypto Opportunities: https://bit.ly/3bB2yAu Grow your Social Following: https://bit.ly/3wJi70U ManySwap: https://bit.ly/3yGUVSP --- Support this podcast: https://anchor.fm/freeaudiobooks/support

This episode covers stellar evolution, specifically how stars form from nebula into protostars, failed stars, and T-tauri stars! Another episode will cover the end of a stars life. Let me know if you have any questions, suggestions for future episodes, or comments.

Tune in to listen to how exactly a star evolves into the next stages of its life and then eventually dies to give way for another star to form!

The stages of Stellar Evolution are tremendous to look at or even to understand. But here is the easy way to remember the things in mind. --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app --- Send in a voice message: https://anchor.fm/jashan-singh27/message

The half-truth and misconception addressed in this episode is whether the age of a star with error bars that overlap with the age of the universe means all of science is wrong and the universe was created 6000 years ago.

Astrophiz 22 is out now on Soundcloud or subscribe in iTunes Part II: The Parkes ‘Dish’ interrogates pulsars to expose gravity waves. We interview Operations Scientist John Sarkissian at the CSIRO Parkes Radio Observatory. He explains how the ‘Spider Dipoles’ that make up the Murchison Widefield Array in remote Western Australia contribute to SKA, how Parkes chase down gravity waves and has detected most of the world’s FRBs (fast radio bursts of unknown origin), after being distracted by ‘perytons’ and microwave ovens. And yes, ‘The Dish’ is searching for Extraterrestrial Intelligence in the international SETI ‘Breakthrough Listen’ project. We’re not saying they’re searching for Aliens ….. but Aliens! Dr Nadezhda in Part I of Stellar Evolution explains how the mass of a star determines its evolutionary path, and next week we will look at the Hetsprung-Russell Diagram “What”s Up in the Sky this Week” for Northern Hemisphere observers and astrophotographers, and for Southern Hemisphere Listeners, December is the best time to see the Large Magellanic Cloud and the Small Magellanic Cloud. We also expose Procyon and curse the moon for demolishing the Geminids Meteor Shower In the News: 1. The Spiderweb galaxy 
2. Imaging a Black Hole Event Horizon 
3. ICRAR tells us the Universe is slowly becoming less energetic (Well, who isn’t ;)

Physics Colloquium 14th October 2016 delivered by Professor Thierry Foglizzo The supernova explosion of massive stars is primarily powered by the gravitational contraction of their core into a neutron star, before the formation of a black hole. Despite numerous observations of supernovae in distant galaxies, the underlying mechanism is still a major challenge to theorists. Prof Foglizzo will review the state of the art, with an emphasis on the multidimensional effects of hydro and MHD instabilities. Non axisymmetric one-armed instabilities known as the Standing Accretion Shock Instability and the corotation instability are able to redistribute angular momentum radially even for moderate rotation rates. Numerical simulations of simplified models are used to evaluate their effect on the explosion and the pulsar spin. Surprisingly, both instabilities can be illustrated with a simple hydraulic experiment based on a shallow water analogy. Results are analyzed in view of the constraints on the angular momentum budget set by stellar evolution on the one hand and by the spin properties of pulsars on the other hand.

Transcript: Mass is the fundamental quantity that controls stellar evolution. The main sequence on an HR diagram is a correlation between the properties of luminosity and effective temperature. The main sequence runs from high luminosity hot stars down to low luminosity cool stars, but the underlying variable on the main sequence is the mass of the star. High luminosity hot stars are high mass and low luminosity cool stars are low mass. The principles of stellar evolution were first worked out by the English theorist Arthur Eddington in the 1920s. He used the idea of pressure force balancing the gravity inward force in a star to deduce the way that stars evolved. This hydrostatic equilibrium that applies at every point within a star creates a stable situation where the rate of evolution is governed by mass.

Transcript: A human lifetime is a blink of an eye compared to the age of the stars which can be hundreds of millions or billions of years. So how is it possible for astronomers to understand the life process of a star, to see their birth, death, and life? Consider an analogy of an intelligent ant living in a forest who lives a very short time but observes the diversity of nature. For instance, there are tall trees and short trees, saplings, fallen logs. Some of the falling logs have been helped by insects to decay back into Earth itself. Could a short living intelligent ant deduce the life cycle of the forest from sapling up to tall tree, to fallen log, and then back to Earth by observations over a short period of time? This is the situation astronomers find themselves in.

Second meeting of Professor Lynn Rothschild's Astrobiology and Space Exploration course. (January 10, 2008)