The 365 Days of Astronomy

365DaysOfAstronomy.org
  • 4.4 (346)
  • 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. 10H AGO

    Ask A Spaceman - Ep. 269: Why Are Interstellar Objects So Weird?

    Hosted by Dr. Paul M. Sutter. What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from? I discuss these questions and more in today's Ask a Spaceman!   Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books   Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!   Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P, Naila, Sam R, Joshua, Scott M, Rob H, Scott M, Louis M, John W, Alexis, Gilbert M, Rob W, Jessica M, Jules R, Jim L, David S, Scott R, Heather, Mike S, Pete H, Steve S, Lisa R, Kevin B, Aileen G, Steven W, Deb A, Michael J, Phillip L, Steven B, Mark R, Alan B, Craig B, Richard K, Joe R, David P, Justin, Tracy F, Ella F, Thomas K, James C, Syamkumar M, Homer V, Mark D, Bruce A, Tim Z, Linda C, The Tired Jedi, Bob C, Stephen A, James R, Allen E, Michael S, Reinaldo A, Sheryl, David W, Chris, Michael S, Erlend A, James D, Karl W, Den K, Edward K, Scott K, Vivek D, Jennifer D, Barbara C, Brad, Azra K, Steve R, Koen G, Scott N, and M D Malahy!   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. Astronomy Cast Ep. 789: What Happens When a Planet's Star Dies

    1D AGO

    Astronomy Cast Ep. 789: What Happens When a Planet's Star Dies

    https://www.youtube.com/watch?v=Me0MNCIuLs8 Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Streamed live on Mar 30, 2026. A star like the Sun only lasts about 10 billion years and it becomes a red giant and finally a white dwarf. This is catastrophic for some of the planets, consumed by the expanding red giant star. But most survive. What happens next in the long, slow cooling to the background temperature of the Universe?   This show is supported through people like you on Patreon.com/AstronomyCast  In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero   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.

    30 min

  3. 2D AGO

    Travelers in the Night Eps. 869 & 870: Taurid Resonant Swarm & Satellite Ashes

    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 October 2025. Today's 2 topics: - The planets, millions of asteroids, tens of thousands of comets, distant icy worlds, and countless other bits and pieces of material orbit the Sun. A group of such co-orbiting objects is called the Taurid complex or swarm. It consists of Comet 2P/Enke, a number of near Earth asteroids, and the meteor stream which produces the Taurid meteor shower every October and November.   - 50 years ago scientists found that Chlorofluorocarbons or CFC chemicals in widespread use in refrigeration, air conditioning , and hair spray were beginning to damage the ozone layer in the Earth's stratosphere which blocks harmful Solar UVB radiation from reaching the surface. The world wide response was the Montreal Protocol banning these chemicals from being released into the atmosphere. It saved millions of humans from dying of skin cancer. Satellite ashes are a new threat to the protective ozone layer.   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
  4. Equatorial Sky Guide - April

    3D AGO

    Equatorial Sky Guide - April

    Hosted by Avivah Yamani, our Director. What's up in the equatorial sky this month? April 2026 brings a spectacular alignment of Mercury, Mars, and Saturn, forming a tight celestial triangle just before sunrise. We also track the journey of the 'Evening Star' Venus as it meets the Seven Sisters, and prepare for the peak of the Lyrid meteor shower under dark, moonless skies. Plus, don't miss the rare occultation of asteroid Strenua, a must-see event for observers in Java, Sumatra, and beyond.   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

  5. 4D AGO

    EVSN - On Background - Comets, the Basics

    From Wednesday, March 25, 2026. In this special episode, funded by the National Science Foundation, we're taking a break from the headlines to share the background story of comets. Today, we'll focus on the origin of comets and their basic anatomy, and in future episodes, we'll dive deep into how comets are discovered, what we can learn from them, and how they can literally and figuratively impact our world.   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

  6. 5D AGO

    Actual Astronomy - The Observer's Calendar for April 2026

    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   This month in episode 528 we talk about 3 Comets, two of which may end up being very bright. We also touch on some colorful double and carbon stars. There are many spring spirals we help listeners find as well as the Lyrid Meteor shower. This month the Moon pairs with Spica, Antares and the planets and at mid-Month a very young moon is visible for some listeners.   Gamma Leonis - Colorful double star 02 - Full Moon - Spica and Moon less than 4° apart 03 - Morning Targets: - Mercury Greatest Elongation 28° from Sun in morning sky - Spring elongations are a disappointment for Mercury - Long Period Variable star max for R Serpentis 05 - Spot Sirius unaided eye before sunset this week. 88 Leonis colorful double star 06 and later - NGC 2903, large 9th mag. spiral in Leo M48 - 6th mag. open cluster well placed at the meridian Moon and Antares at dawn less than 4° apart 08 - NGC 3521 - well placed 9th magnitude spiral galaxy in S. Leo 09 - Carbon Star TU Geminorum is best 10 & later - Last Quarter Moon and Lunar X visible and 10th magnitude comet hanging out in Ursa Major Mid-April - Moon, Mercury, Neptune, Mars, Saturn all congregate in morning sky - they are LOW 17 - New AND ***** Very Young Moon visible 14.5hrs old for us here in Canada, 6th magnitude so a real challenge but west of us esp. West coast it'll be 17hrs old… that's very doable 18 - Venus and Moon under 5° apart 22 - Lyrid Meteors - ZHR 18 - best in pre-dawn skies 23 - Last quarter Moon & Hipparchus ray visible on Moon 24 - Mons Pico & Pico Beta (the "Brothers Pico") visible south of Plato Long period variable carbon star SS Vir @ 11:00 pm 25 - Moon occults Regulus this evening, 6:45pm for extreme S Canada & USA 25 - Eastern Mare 9:00 pm & Eyes of Clavius 9:00 pm 26 - Lunar Straight wall   Please subscribe and share the show with other stargazers you know and send us show ideas, observations and questions to actualastronomy@gmail.com   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.

    23 min

  7. 6D AGO

    Guide To Space - Project Artemis: NASA's Plans To Return To The Moon By 2024

    https://www.youtube.com/watch?v=FCqU0nz6iFU Hosted by Fraser Cain. From May 21, 2019. On Monday, May 13, 2019, NASA declared: "We are going to the Moon to stay" by 2024. It's an exciting announcement; the return to a place humans haven't set foot on in more than 45 years. A serious goal that will test the ability of technology and engineering, as well as the bravery of the men and women who will carry out this task.   But we've also heard announcements like this before, many times. How will the mission come together? What are the risks? What's new this time?    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.

    10 min

  8. MAR 31

    Had Astra Historia - Ep 302 – Take the Gloves Off, Part II

    Today's guest: Dr. Richard Tresch Fienberg, astronomer and science communicator, recently served as the Expert Astronomer for Sky & Telescope's September 2025 Astronomy Tour. In our interview, we explore "Galileo's Italy" with him. Though enjoying retirement, he volunteers his time for the American Astronomical Society as Senior Advisor to the CEO, and is a Senior Contributing Editor with Sky & Telescope. This is the second of two episodes covering our interview.   H'ad astra historia is the official podcast for the Historical Astronomy Division (https://had.aas.org/) 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/)  - Star Trek sound effects: the Trek Core website (https://www.trekcore.com/audio/) - Music for interview question 3 (highlights of Rome):  Monteverdi's L'Orfeo (1607), an excerpt from Carnegie Hall+ from June 2022 (https://www.youtube.com/watch?v=doMbxshdTPc)   Podcaster:  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.   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.

    41 min
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Hosts & Guests

4.4
out of 5
346 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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