The 365 Days of Astronomy

365DaysOfAstronomy.org
  • 4.4 (349)
  • Astronomy
  • Updated Daily

The 365 Days of Astronomy podcast launched in 2009 as part of the International Year of Astronomy. This community podcast continues to bring you day after day of content across the years. Everyday, a new voice, helping you see the universe we share in a new way. This show is managed by Avivah Yamani, edited by Richard Drumm. This podcast is funded through Patreon.com/CosmoQuestX and produced out of the Planetary Science Institute.

  1. Astronomy Cast Ep. 6: Ep. 6: More Evidence For the Big Bang

    16h ago

    Astronomy Cast Ep. 6: Ep. 6: More Evidence For the Big Bang

    Mon 06: Astronomy Cast Ep. 6: Ep. 6: More Evidence For the Big Bang http://www.astronomycast.com/archive/ From October 16, 2006. Last week's episode started out with a bang… a Big Bang. This week we continue our discussion into the beginning of everything. We present three additional lines of evidence that have led astronomers to the conclusion that our Universe started out as a singularity 13.7 billion years ago, and has been expanding ever since.   Fraser Cain: So Pamela, last week we started out with the big bang and discussed the cosmic microwave background radiation. Now, if people still aren't convinced that the universe began as a singularity 13.7 billion years ago, and has been expanding ever since, fine. We've got more evidence: take your pick. Okay Pamela, continue convincing us!   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.

    29 min

  2. 1d ago

    Travelers in the Night Eps. 895 & 896: Tracking Space Junk & Sneaky But Potentially Dangerous

    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 From April 2026. Today's 2 topics: - According to NASA an average of one catalogued piece of space junk per day has come down to Earth over the past 50 years. Research is described which can track space junk in the atmosphere and provide the starting location and altitude for tracking clouds of environmentally problematic toxic chemical and/or nuclear contaminants released by the disintegration of reentering spacecraft.   - My Catalina Sky Survey teammate Greg Leonard was asteroid hunting with our 60 inch telescope on Mt. Lemmon, Arizona when he came across an unknown moving point of light in the night sky. After Greg reported his observations to the Minor Planet Center his discovery was tracked by telescopes in California, Romania, Germany, New Mexico, Arizona, Bavaria, and Japan. Astronomers used these data to calculate that Greg's discovery orbits the sun between Venus and Earth, estimate its size to be approximately twice the length of a football field, and give it the name 2026 BX4.    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.

    6 min

  3. 2d ago

    Equatorial Sky Guide For July

    Hosted by our Director, Avivah Yamani. Discover the highlights of the July 2026 equatorial night sky, including Venus meeting Regulus, Mars and Uranus' closest conjunction until 2053, the Buck Moon, meteor showers, and the best nights to observe the Milky Way.   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.

    7 min

  4. 3d ago

    EVSN - Tracing the Hidden & Revealing the Past

    From June 24, 2026. In this episode we look at the hidden and unexpected geology that may lurk beneath East Antarctica's ice sheet, evidence of past worlds and lost moons that may once have populated our solar system, and evidence of a past Supernova that today may be showering the Earth with material.   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.

    19 min

  5. 4d ago

    Actual Astronomy - Observer's Calendar For July

    Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com Patreon thanks go out to Justin Y. Also thanks for all the kind comments on the David Nagler Episode. [Rich] I'm sorry, but the lads didn't give me a detailed list of sky treats to put here in the show notes. Maybe next time. I share those with my astronomy club members & they really appreciate it!   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.

    34 min

  6. 5d ago

    H'ad Astra Historia - Ep 304: More 'This Month in Astronomical History' Sedna & Lunokhod

    Today's 'guest' is HAD's This Month in Astronomical History.  I'll be reading more essays from the archives: Emily McMahon's November 2020 essay titled, "Sedna: In the Depths of the Solar System", and Dr. Ken Rumstay's November 2022 essay titled, "Lunokhod 1 - The First Extraterrestrial Rover". Please note that Emily was a high school student when she wrote her essay, so you don't have to be an astronomer or astrophysicist to write for TMIAH.   H'ad astra historia is the official podcast for the Historical Astronomy Division of the American Astronomical Society. We're here to share stories from and about the people who study the stars, planets, and the cosmos. We'll be hearing from individuals who not only study the history of astronomy, but also those who lived it, who were "in the room" during pivotal events within the last 50 years or so.     Podcast theme music: "Frost Waltz" Kevin MacLeod (incompetech.com), licensed under creative commons: by attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/)    Loretta Cannon (an AAS affiliate via Rose City Astronomers) is a science-and-word-nerd who really likes outer space and the people who study it. She quite enjoys working as HAD's podcaster, sharing astronomy stories to you.   This Month in Astronomical History:   https://had.aas.org/resources/astro-history   Dr. Mugdha Polimera:   https://www.mugdhapolimera.com/   Sedna: In the Depths of the Solar System   TMIAH  Nov 2020  "Sedna: In the Depths of the Solar System":   https://aas.org/posts/news/2020/11/month-astronomical-history-november-2020   Emily McMahon:   https://www.linkedin.com/in/emilykmcmahon/  https://aas242-aas.ipostersessions.com/Default.aspx?s=88-6D-5F-F3-FF-2E-D2-CD-AA-94-0C-FA-DE-FF-11-5E   Sedna (2003 VB12):   https://en.wikipedia.org/wiki/Sedna_(dwarf_planet) Sedna (Inuit legend):   https://en.wikipedia.org/wiki/Sedna_(mythology)   Kuiper Belt:   https://science.nasa.gov/solar-system/kuiper-belt/   Oort Cloud:   https://science.nasa.gov/solar-system/oort-cloud/   Palomar Observatory:   https://sites.astro.caltech.edu/palomar/homepage.html https://sites.astro.caltech.edu/palomar/about/chronology.html   Mike Brown (CalTech):   https://mikebrown.caltech.edu/   Chad Trujillo (NAU, Gemini):   https://directory.nau.edu/person/cat382 https://www.sciencefriday.com/person/chad-trujillo/   David Rabinowitz (Yale):   https://en.wikipedia.org/wiki/David_L._Rabinowitz https://physics.yale.edu/people/david-rabinowitz   Samuel Oschin 48" Schmidt Telescope:  https://sites.astro.caltech.edu/palomar/about/telescopes/oschin.html   Quasar Equatorial Survey Team (QUEST) Camera:   https://www.astro.yale.edu/mschwamb/Quest_La_Silla_KBO_Survey/Telescope_and_Camera.html   SkyMorph program:   https://ui.adsabs.harvard.edu/abs/1998BAAS...30.1036L/abstract   Palomar Sky Survey:   https://voyages.sdss.org/expeditions/expedition-to-galaxies/sky-surveys/the-palomar-sky-survey/   Gemini Telescope:   https://www.gemini.edu/   Keck Observatory:   https://keckobservatory.org/   Hubble Space Telescope:   https://science.nasa.gov/mission/hubble/ NASAs's Dwarf Planets (including Pluto, Eris):   https://science.nasa.gov/dwarf-planets/   Mike Brown's paper describing Sedna's discovery:   https://web.gps.caltech.edu/~mbrown/sedna/#planets   Sedna webpage (by Mike Brown):   https://web.gps.caltech.edu/~mbrown/sedna/#planets   animation of Sedna's orbit by Robert Hurt (Spitzer Sci Ctr):   https://www.spitzer.caltech.edu/video/ssc2004-05v1-orbit-of-sedna   2012 VP113 'Biden':   https://en.wikipedia.org/wiki/2012_VP113   2015 TG387 'The Goblin':   https://en.wikipedia.org/wiki/541132_Lele%C4%81k%C5%ABhonua https://www.npr.org/2018/10/02/653453443/a-small-planet-with-big-implications   Lunokhod 1 – The First Extraterrestrial Rover TMIAH  Nov 2022  "Lunokhod 1 – The First Extraterrestrial Rover":   https://aas.org/posts/news/2022/11/month-astronomical-history-november-2022   Prof Kenneth Rumstay:   https://www.valdosta.edu/about/news/releases/2017/09/dr.-kenneth-rumstay-honored-with-presidential-excellence-award-for-teaching.php https://meritpages.com/KennethRumstay   HAD News:   https://had.aas.org/news/had_news   Mars Curiosity rover:   https://science.nasa.gov/mission/msl-curiosity/   Soviet Union:   https://en.wikipedia.org/wiki/Soviet_Union   Soviet N1 rocket:   https://en.wikipedia.org/wiki/N1_(rocket)   NASA's Apollo program:   https://www.nasa.gov/the-apollo-program/   Lunokhod ('moonwalker') 1:   https://en.wikipedia.org/wiki/Lunokhod_1   Baikonur Cosmodrome:   https://en.wikipedia.org/wiki/Baikonur_Cosmodrome   Lunar Reconnaissance Orbiter:   https://science.nasa.gov/mission/lro/      Sky and Telescope magazine:   https://skyandtelescope.org   NPR article on Lunokhod 2 rover (discusses Garriott's purchase):   https://www.npr.org/2010/03/20/124956591/lunar-rover-is-spotted-for-first-time-in-37-years   China's Yutu rovers:   https://en.wikipedia.org/wiki/Yutu_(rover) https://www.planetary.org/space-missions/change-4   Sputnik I:   https://en.wikipedia.org/wiki/Sputnik_1   Artemis Program:   https://www.nasa.gov/humans-in-space/artemis/   A Little Bit of Trivia – NASA mission patches Artemis Program:   https://www.nasa.gov/humans-in-space/artemis/   Artemis I:   https://www.nasa.gov/mission/artemis-i/   Marvel's Agents of S.H.I.E.L.D., season 3:   https://en.wikipedia.org/wiki/Agents_of_S.H.I.E.L.D._season_3   Mission patch:   https://en.wikipedia.org/wiki/Mission_patch https://www.nasa.gov/gallery/human-spaceflight-mission-patches/   Loretta Cannon's LinkedIn page (for transcripts' pdf files):   https://www.linkedin.com/in/lorettajcannon-neptuneedit/   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.

    28 min
  7. Cheap Astronomy - Dear CA Ep. 136: Complexities

    6d ago

    Cheap Astronomy - Dear CA Ep. 136: Complexities

    Things aren't always straight-forward. Hosted by Steve Nerlich. Dear Cheap Astronomy – What's all the current fuss about dark energy? Some preliminary data from the Dark Energy Spectroscopic Instrument, also known as DESI has resulted in a swath of popular science articles claiming dark energy is diminishing.  Well… It's worth starting by saying that many of the core project team have stressed it's just the first data release – there'll be at least four more, so everyone should probably just chill a bit until more data is available.   Dear Cheap Astronomy – Why do eclipse paths run in different directions? Yes folks, it's that rare event when we actually answer an astronomy question. So, solar eclipses. As you know, the Earth's rotation makes the Sun appear to cross the Earth's daytime sky following a line we call the ecliptic. And yep, that's no coincidence, but we'll get to that. The ecliptic is not a fixed path because of the Earth's tilted axis of rotation. So as the Earth progresses in its orbit around the Sun, from the Earth's surface at the equinoxes, the Sun appears to be overhead at the equator, but for the rest of the year it's either shifting north towards the Tropic of Cancer or south towards the Tropic of Capricorn.   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.

    16 min
  8. Astronomy Cast Ep. 799: Heavy Lift Rockets

    Jun 29

    Astronomy Cast Ep. 799: Heavy Lift Rockets

    https://www.youtube.com/watch?v=aDgA3eiUANs Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live June  22, 2026. The Saturn 5 was a monster, capable of sending humans and a lander to the Moon and bringing them back again. But the number of heavy lift rockets since then has gotten pretty sparse. Now, with tens if not hundreds of thousands of satellites in the works, giant new space telescopes and multi-ton lunar landers in development there are heavy lift solutions to match. So let's talk about them! From yesterday's Saturn V to today's Ariane VI, rockets capable of launching large telescopes or small space stations in a single go are modern marvels. They are also wildly dangerous, and not exactly compatible. Let's look at today's fleet of rockets and just what they're accomplishing.    This show is supported through people like you on Patreon.com/AstronomyCast  In this episode, we'd like to thank: Andrew Poelstra, Burry Gowen, David, David Rossetter, Ed, Eric Lee, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Joe McTee, Michael Purcell, Sergey Manouilov, Siggi Kemmler   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.

    40 min
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Hosts & Guests

4.4
out of 5
349 Ratings

About

The 365 Days of Astronomy podcast launched in 2009 as part of the International Year of Astronomy. This community podcast continues to bring you day after day of content across the years. Everyday, a new voice, helping you see the universe we share in a new way. This show is managed by Avivah Yamani, edited by Richard Drumm. This podcast is funded through Patreon.com/CosmoQuestX and produced out of the Planetary Science Institute.

Information

  • Creator
    365DaysOfAstronomy.org
  • Years Active
    2008 - 2026
  • Episodes
    250
  • Rating
    Clean
  • Copyright
    © 2009
  • Show Website
    The 365 Days of Astronomy

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