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.
Latest Episodes
View all 268 episodesSpace Stories - Astronomy Words: The Constellations
Ask A Spaceman - Ep. 270: Is the Universe…Defective?
Astronomy Cast Ep. 790: Meteorites From Other Worlds
Travelers in the Night Eps. 373 & 374: Tracking 3I/Atlas & Good Night at Bok
Actual Astronomy - 12 Months of Messier
EVSN - Supervolcanoes: Erupt, Refill, Repeat
Guide To Space - Bringing Mars To Earth
Cheap Astronomy - Dear CA # 133: Why It's Always C
Deep Astronomy - Webb's Deepest Field in 4K - Discoveries of Webb Space Telescope: Ep. 5
Astronomy Cast Ep. 161: Launch Facilities
Travelers in the Night Eps. 871 & 872: New Mars Trojan & Climate Ignored
NOIR Lab - An Extremely Rare Ancient Star
EVSN - Science in Pairs & Moon Plans Redux
UNAWE Space Scoop - A Rule-Breaking Supermassive Black Hole
Awesome Astronomy - Gravitational Musing & Nuclear Cruising
Ask A Spaceman - Ep. 269: Why Are Interstellar Objects So Weird?
Astronomy Cast Ep. 789: What Happens When a Planet's Star Dies
Travelers in the Night Eps. 869 & 870: Taurid Resonant Swarm & Satellite Ashes
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 [email protected].
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 [email protected].