Shows / The 365 Days of Astronomy
The 365 Days of Astronomy
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.
Episodes
The 365 Days of AstronomyTravelers in the Night Eps. 371 & 372: Kiwi Nights & Close Ones
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomySpace Stories - Syzygy, When Worlds Line Up
Hosted by our Director, Avivah Yamani. What is a syzygy? Explore one of astronomy's strangest words and discover how the Sun, Earth, Moon, eclipses, transits…
The 365 Days of AstronomyEVSN - After Hours #8: Making Moons & Getting Cratered With William K Hartmann
Hosted by: Dr. Pamela L. Gay (@CosmoQuest) From August 13, 2026. Across a long career, Dr. William Hartmann has done everything from innovating how the Moon…
The 365 Days of AstronomyGuide To Space - Are Aliens Watching Us & How Could We Hide? With Dr. David Kipping
https://www.youtube.com/watch?v=Rx1276dpHe4 From Jan 14, 2020. Hosted by: Fraser Cain (@frasercain) Once again, at the AAS Meeting in Hawaii, I got a chance to…
The 365 Days of AstronomyDeep Astronomy - NASA's TESS Finishes First Year of Exoplanet Science Operations
https://www.youtube.com/watch?v=ivzbZRWkMUg Hosted by Tony Darnell. From Nov 12, 2019. NASA's Transiting Exoplanet Survey Satellite has completed its first…
The 365 Days of AstronomyCheap Astronomy - Dear CA #138: In Space!
Some place in space. Hosted by Steve Nerlich. Dear Cheap Astronomy – What is the role of AI in space? AI simulates human decision-making and finds most…
The 365 Days of AstronomyAstronomy Cast Ep. 101: Advanced Propulsion Systems
From August 11, 2008. Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Last week we talked about rockets. How they work, how they go…
The 365 Days of AstronomyTravelers in the Night Eps. 369E & 370E: Night Vision & Double Comet
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyActual Astronomy - Messier Objects for August
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their…
The 365 Days of AstronomySpace Stories - The Fastest Star in the Milky Way
Hosted by our Director, Avivah Yamani. Meet S301, the fastest known star in the Milky Way, racing around Sagittarius A* and offering astronomers a new way to…
The 365 Days of AstronomyEVSN - After Hours: Doing Big Science With Light Tools & Guest Dr. Danny Jacobs
From July 30, 2026. Hosted by: Dr. Pamela L. Gay (@CosmoQuest) Science comes from many corners, and there is a need for both 600-m radio telescopes made on a…
The 365 Days of AstronomyAwesome Astronomy - The Eclipse & the Perseids
August Part 2. Paul Hill hosts solo! Damien Phillips, John Wildridge and Dustin Ruoff produce. Join Paul in his Astronomy lair as he live sketches the Eclipse…
The 365 Days of AstronomyAsk A Spaceman Ep. 278: What's A Good Story About Chandrasekhar?
Physics under pressure! Hosted by Dr. Paul M. Sutter. What was the big deal about Chandrasekhar's discovery? Why did he meet so much resistance? How is his…
The 365 Days of AstronomyAstronomy Cast Ep. 118: Sky Surveys
http://www.astronomycast.com/archive/ From December 12, 2008. Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) In the old days…
The 365 Days of AstronomyTravelers in the Night Eps. 367 & 368: Moons of Florence & Roving Venus
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyAstroman - E is for Eclipse
Today's episode is all about last Wednesday's total solar eclipse. But you have a partial lunar eclipse that's coming up that you can look forward to on August…
The 365 Days of AstronomyEVSN - After Hours: International Moon Day 2026 With guest Jekan Thanga
Hosted by: Dr. Pamela L. Gay (@CosmoQuest) From July 22, 2026. On July 20, the world celebrates International Moon Day. This UN designated holiday marks the…
The 365 Days of AstronomyGuide To Space - Where Do Comets Come From? Exploring the Oort Cloud
https://www.youtube.com/watch?v=IQtdQ94jy8I From Oct 17, 2017. Hosted by: Fraser Cain (@frasercain) Some comets orbit the Sun on a regular basis, but others…
The 365 Days of AstronomyEquatorial Sky Guide - August 2026
Hosted by our Director, Avivah Yamani. Explore the August 2026 equatorial sky, from the Perseids and Milky Way to bright planets and the August 12 total solar…
The 365 Days of AstronomyCheap Astronomy - Dear CA Ep. 137: Space Missions
Hosted by Steve Nerlich. We are still out there. Dear Cheap Astronomy – Why do some space missions last so long? So, we're all familiar with the stories of the…
The 365 Days of AstronomyAstronomy Cast Ep. 160: Eclipses
http://www.astronomycast.com/archive/ From October 19, 2009. Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) Every now and then, the…
The 365 Days of AstronomyTravelers in the Night Eps. 365E & 366E: Spotting Meteors & Mars Rocks
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyNOIRLab - The Start of the LSST
Hosted by Rob Sparks. The 10-year Legacy Survey of Space and Time has officially started, marking the beginning of a new era in astronomy and astrophysics…
The 365 Days of AstronomyEVSN - After Hours: Space Rocks Collected for Science With Guest Dr. Rhonda Stroud
From July 15, 2026. Hosted by: Dr. Pamela L. Gay (@CosmoQuest) Our solar system readily provides us with free samples of other worlds in the form of…
The 365 Days of AstronomyActual Astronomy - The Observer's Calendar for August 2026
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their…
The 365 Days of AstronomyAsk A Spaceman Ep. 277: What's It Like to Travel Near the Speed of Light?
Life at lightspeed! Hosted by Dr. Paul M. Sutter. What does high-speed motion through the Universe do to your perspective? What is the Rindler horizon, and how…
The 365 Days of AstronomyAwesome Astronomy - August Part 2: Jodrell Bank Murder Club
Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. Angry episode where Paul and Jeni have their blood…
The 365 Days of AstronomyAstronomy Cast Ep. 85: Detectors
http://www.astronomycast.com/archive/ Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) From April 21, 2008. Our senses can only detect…
The 365 Days of AstronomyTravelers in the Night Eps. 363E & 364E: House Sized Space Rocks & Jupiter
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomySpace Stories - Betelgeuse Was Never Alone
Hosted by Avivah Yamani, our Director! Was Betelgeuse ever truly alone? For over 100 years, astronomers searched for a hidden companion to Orion's famous red…
The 365 Days of AstronomyEVSN - Betelgeuse Smaller Than Previously Calculated, Still A Mystery
From February 10, 2021. Hosted by Dr. Pamela L. Gay. Scientists collected fresh data on Orion's bright star Betelgeuse to try and understand this star that…
The 365 Days of AstronomyUNAWE Space Scoop - A Blazing Hot World With A Buzzing Secret
https://spacescoop.org/en/scoops/2608/a-blazing-hot-world-with-a-buzzing-secret/ Hosted by our editor, Richard Drumm. Far, far away from Earth, over 300…
The 365 Days of AstronomyGuide To Space - Betelgeuse Is Still Dimming! And We Have the Pictures to Prove It
https://www.youtube.com/watch?v=gC4LEozmqXE From Feb 16, 2020. Hosted by Fraser Cain. Near the end of 2019, astronomers watching the red giant Betelgeuse noted…
The 365 Days of AstronomyAwesome Astronomy - Eclipse Girl Summer!
July Part 2! Paul Hill & Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. Summer is here, so is the heat and so…
The 365 Days of AstronomyAstronomy Cast Ep. 89: Adaptive Optics
http://www.astronomycast.com/archive/ Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) From May 19, 2008. Since the dawn of humanity…
The 365 Days of AstronomyTravelers in the Night Eps. 361E & 362E: Newest Moon & Tiny Beasts
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyThe Cosmic Savannah Ep. 84: Celebrating 10 Years of IDIA
Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela, Dr. Daniel Cunnama & François Campher. In this special episode of The Cosmic Savannah, we celebrate the…
The 365 Days of AstronomyEVSN - Black Holes, Giant Galaxies & A Baby Planet
From May 21, 2020. Hosted by Dr. Pamela L. Gay. Join us today as we discuss the impressive work by an undergraduate student who figured out how galaxy mergers…
The 365 Days of AstronomyActual Astronomy - Messier Objects For July 2026
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their…
The 365 Days of AstronomyGuide To Space - Where Are All The Alien Robots? The Chilling Idea Of Von Neumann Probes
https://www.youtube.com/watch?v=vHMIv_zAbrM From Oct 6, 2016. Hosted by Fraser Cain. As you know, I'm obsessed about the Fermi Paradox. Where are all the…
The 365 Days of AstronomyAsk A Spaceman Ep. 276: What Would Happen if the Sun…Stopped?
Solar Apocalypse! Hosted by Dr. Paul M. Sutter. What really keeps the Sun shining? How long would it stay warm if fusion stopped? How long would it take before…
The 365 Days of AstronomyAstronomy Cast Ep. 58: Inflation
http://www.astronomycast.com/archive/ From October 15, 2007. Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) We interrupt this tour…
The 365 Days of AstronomyTravelers in the Night Eps. 899 & 900: Hitch Hiking an Asteroid to Mars & Earth Life From Mars
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyAstroMan - D for Dark Sky Protection
When was the last time you saw the Milky Way? In this episode of Astroman, Exodus Chun-Long Sit explores how light pollution is changing our night skies…
The 365 Days of AstronomyEVSN - Astronomy Asks: How Did You Get There?
From July 1, 2026. How is this the last episode of the season? July snuck up on us. We'll be back Sept 2 with Season 5! For now, we've got astronomers asking…
The 365 Days of AstronomySpace Stories - Starburst Galaxy: The Universe's Stellar Baby Boom
Hosted by Avivah Yamani, our Director! Some galaxies don't just make stars. They go on a star-making frenzy! Discover what turns an ordinary galaxy into a…
The 365 Days of AstronomyGuide To Space - What Are Fast Radio Bursts? A Big Mystery in Astronomy
https://www.youtube.com/watch?v=ikdOTj6g_Zw Hosted by Fraser Cain. From Apr 26, 2017. Here's a big mystery in astronomy: fast radio bursts. Brief shrieks of…
The 365 Days of AstronomyDeep Astronomy - Exolife Hangout: Happy Pi Day!
https://www.youtube.com/watch?v=zXW7uXo04aE Hosted by Tony Darnell. Streamed live on Mar 14, 2018. Join Tony Darnell, Dr. Jeff Kuhn, Dr. Svetlana Berdugina and…
The 365 Days of AstronomyAstronomy Cast Ep. 41: The Rise of The Supertelescopes
Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) From June 18, 2007. The last decade has been the golden age of astronomy, with new…
The 365 Days of AstronomyTravelers in the Night Eps. 897 & 898: Kacper's Comet & Pandora
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at…
The 365 Days of AstronomyNOIRLab - The First Magnetar Progenitor
Neutron stars, the compact remains of a massive star following a supernova explosion, are the densest matter in the Universe. Some neutron stars, known as…
The 365 Days of AstronomyEVSN - After Hours: Exploring Physics Through Spaceflight Missions with author Trisha Muro
Hosted by Dr. Pamela L. Gay. From July 8, 2026. The physics behind modern spaceflight explores everything from aerodynamics to thermodynamics with a lot of…
The 365 Days of AstronomyUNAWE Space Scoop - Why Does Jupiter Have Bigger Moons Than Saturn
https://spacescoop.org/en/scoops/2609/why-does-jupiter-have-bigger-moons-than-saturn/ Hosted by our editor, Richard Drumm. Jupiter and Saturn are the gas…
The 365 Days of AstronomyAwesome Astronomy - When Cosmologists Get Spicey
Paul Hill & Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. This month it appears cosmology is saved, Swift…
The 365 Days of AstronomyAsk A Spaceman Ep. 275: Why Can't the Universe Be Cyclic?
Hosted by Dr. Paul M. Sutter. What are the weaknesses of inflation theory? How did the ekpyrotic theory attempt to improve it? How did it open up its own can…
The 365 Days of AstronomyAstronomy 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…
The 365 Days of AstronomyTravelers 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…
The 365 Days of AstronomyEquatorial 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…
The 365 Days of AstronomyEVSN - 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…
The 365 Days of AstronomyActual 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…