Astronomy Cast
Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (Planetary Science Institute), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us. Astronomy Cast is supported thru patreon.com/AstronomyCast.
- Update frequency
- every 7 days
- Average duration
- 31 minutes
- Episodes
- 644
- Years Active
- 2006 - 2025
Ep. 762: Science in Crisis - NASA’s New Budget
Astronomy Cast Ep. 762: Science in Crisis - NASA’s New Budget By Fraser Cain & Dr. Pamela Gay Streamed live on Jun 30, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay Normally we try to end the se…
00:48:09 |
Mon 07 Jul 2025
Ep. 761: It's Here! The Vera Rubin Observatory
Astronomy Cast Ep. 761: It's Here! The Vera Rubin Observatory By Fraser Cain & Dr. Pamela Gay Streamed live June 25, 2025. The time has come. The mighty Vera Rubin Observatory has finally come on lin…
00:30:31 |
Mon 30 Jun 2025
Ep. 760: What to Look For This Summer
Astronomy Cast Ep. 760: What to Look For This Summer By Fraser Cain & Dr. Pamela Gay Streamed live on Jun 16, 2025. It’s almost time for our annual summer hiatus, but before we go, we wanted to direc…
00:28:59 |
Mon 23 Jun 2025
Ep. 759: The Commercial Space Program
Astronomy Cast Ep. 759: The Commercial Space Program By Fraser Cain & Dr. Pamela Gay Streamed live on Jun 9, 2025. Humanity has turned its focus back to the Moon, sending a fleet of spacecraft to the…
00:35:06 |
Mon 16 Jun 2025
Ep. 758: Non-Roving Rovers
Astronomy Cast Ep. 758: Non-Roving Rovers By Fraser Cain & Dr. Pamela Gay Streamed live on May 26, 2025. Some of our favorite robots are rovers currently roving around the surface of the Moon & Mars.…
00:31:03 |
Mon 02 Jun 2025
Ep. 757: CubeSats
Astronomy Cast Ep. 757: CubeSats By Fraser Cain & Dr. Pamela Gay Streamed live on May 19, 2025. Computers are getting smaller, faster and more capable, which has enabled an entirely mew class of sate…
00:33:13 |
Mon 26 May 2025
Ep. 756: SphereX
Astronomy Cast Ep. 756: SphereX By Fraser Cain & Dr. Pamela Gay Streamed live on May 12, 2025. NASA’s newly launched SphereX mission is up & operational and has completed its initial checkout and “fi…
00:28:21 |
Mon 19 May 2025
Ep. 755: Intermediate Mass Black Holes
Astronomy Cast Ep. 755: Intermediate Mass Black Holes By Fraser Cain & Dr. Pamela Gay Streamed live on May 5, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. There are stellar-mass and supermassi…
00:31:55 |
Mon 12 May 2025
Ep. 754: K2-18b
Astronomy Cast Ep. 754: K2-18b By Fraser Cain & Dr. Pamela Gay Streamed live on Apr 28, 2025. You’ve heard the news! Astronomers are reporting the discovery of biosignatures at K2-18b. Is this proof …
00:32:51 |
Mon 05 May 2025
Ep. 753: Why is the Moon's South Pole So Interesting?
Astronomy Cast Ep. 753: Why is the Moon's South Pole So Interesting? By Fraser Cain & Dr. Pamela Gay Streamed live on Apr 21, 2025. I’m sure you’ve heard that all eyes are on the Moon’s southern pole…
00:35:33 |
Mon 28 Apr 2025
Ep. 752: Should We Go to the Moon or Mars Next?
Astronomy Cast Ep. 752: Should We Go to the Moon or Mars Next? By Fraser Cain & Dr. Pamela Gay Streamed live on Apr 16, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay There is an ongoing debate o…
00:36:33 |
Mon 21 Apr 2025
Ep. 751: Vacuum Energy
Astronomy Cast Ep. 751: Vacuum Energy By Fraser Cain & Dr. Pamela Gay Streamed live on Apr 7, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. Even empty space isn’t empty. It’s filled with the qu…
00:33:33 |
Mon 14 Apr 2025
Ep. 750: Supernova Early Warning System
Astronomy Cast Ep. 750: Supernova Early Warning System By Fraser Cain & Dr. Pamela Gay Streamed live on Mar 31, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay When enormous stars detonate as supe…
00:26:34 |
Mon 07 Apr 2025
Ep. 749: Dark Energy Changing Over Time
Astronomy Cast Ep. 749: Dark Energy Changing Over Time By Fraser Cain & Dr. Pamela Gay Streamed live on Mar 24, 2025. The Hubble Tension is a vexing problem, with astronomers measuring the expansion …
00:32:07 |
Mon 31 Mar 2025
Ep. 748: Fast Radio Bursts
Astronomy Cast Ep. 748: Fast Radio Bursts By Fraser Cain & Dr. Pamela Gay Streamed live on Mar 17, 2025. For the briefest of moments, some dead stars can flash brighter than their entire galaxy (in R…
00:28:06 |
Mon 24 Mar 2025
Ep. 747: Rogue Planets
Streamed live on Mar 10, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay Most planets orbit stars. That’s the rule, right? Well, maybe not. In fact the vast majority of planets could be floating f…
00:29:06 |
Mon 17 Mar 2025
Ep. 746: Dust Storms
Astronomy Cast Ep. 746: Dust Storms By Fraser Cain & Dr. Pamela Gay Streamed live Feb 24, 2025. We have dust storms on Earth and of course the famous dust storms on Mars. There are even dust storms o…
00:28:25 |
Mon 03 Mar 2025
Ep. 745: How We Know If Asteroids Will Attack
Astronomy Cast Ep. 745: How We Know If Asteroids Will Attack By Fraser Cain & Dr. Pamela Gay Streamed live Feb 20, 2025. I’m sure you’ve heard the news, asteroid 2024 YR4 has a tiny chance of hitting…
00:30:00 |
Mon 24 Feb 2025
Ep. 744: Lunar Time
Astronomy Cast Ep. 744: Lunar Time By Fraser Cain & Dr. Pamela Gay Streamed live on Feb 10, 2025. What time is it? OK, fine, what time is it on the Moon? The Moon orbits the Earth, so it doesn’t fall…
00:31:29 |
Mon 17 Feb 2025
Ep. 741: Technosignatures
Astronomy Cast Ep. 741: Technosignatures By Fraser Cain & Dr. Pamela Gay Streamed live on Jan 20, 2025. As humanity developed more advanced technology, we’re having a larger effect on our environment…
00:36:03 |
Mon 27 Jan 2025
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