Astronomy Cast
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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 a...
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Ep. 767: Black Holes in Extreme Circumstances
Astronomy Cast Ep. 767: Black Holes in Extreme Circumstances By Fraser Cain & Dr. Pamela Gay Hosted by: Fraser Cain and Dr. Pamela L. Gay Streamed liv...
Ep. 766: How Spacecraft End
Astronomy Cast Ep. 766: How Spacecraft End By Fraser Cain & Dr. Pamela Gay End-of-Life Planning for Your Spacecraft! Streamed live October 1, 2025. Yo...
Ep. 765: Rockets vs The Environment
Astronomy Cast Ep. 765: Rockets vs The Environment By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 22, 2025. We don’t launch a lot of rockets eve...
Ep. 764: Cleared For Launch!
Astronomy Cast Ep. 764: Cleared For Launch! By Fraser Cain & Dr. Pamela Gay Streamed live September 17, 2025. This week, we look at the process behind...
Ep. 763: Interstellar Comets
Astronomy Cast Ep. 763: Interstellar Comets By Fraser Cain & Dr. Pamela Gay Streamed live Sep 8, 2025. Welcome to the first episode of our 19th season...
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 an...
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 migh...
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 su...
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...
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 curren...
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...
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 & operation...
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. Pam...
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 dis...
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 he...
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 a...
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...
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. P...
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 p...
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...
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...
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...
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 new...
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 Mo...
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...
Ep. 740: Sneaky Stars!
Astronomy Cast Ep. 740: Sneaky Stars! By Fraser Cain & Dr. Pamela Gay Streamed live on Jan 13, 2025. Why stars can’t be trusted! If you’re an astronom...
Ep. 739: Drones!
Astronomy Cast Ep. 740: Drones! By Fraser Cain & Dr. Pamela Gay Streamed live January 9, 2025. From little Ingenuity to the future Firefly and all our...
Ep. 736: Gift Guide 2024
Astronomy Cast Ep. 736: Gift Guide 2024 By Fraser Cain & Dr. Pamela Gay Streamed live on Dec 2, 2024 It’s time for our Holiday Gift Guide, where we su...
Ep. 735: Albert Einstein
Astronomy Cast Ep. 735: Albert Einstein By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 25, 2024. Last week we talked about the Einstein probe. S...
Ep. 734: The Einstein Mission
Astronomy Cast Ep. 734: The Einstein Mission By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 11, 2024. Hosted by: Fraser Cain and Dr. Pamela L. G...
Ep. 733: Euclid Of Alexandria
Astronomy Cast - Ep. 733: Euclid Of Alexandria By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 5, 2024. Last week we talked about the mission. Th...
Ep. 732: The Euclid Telescope
Astronomy Cast Ep. 732: The Euclid Telescope By Fraser Cain & Dr. Pamela Gay Streamed live on Oct 28, 2024. Let's look at the Euclid Space Telescope....
Ep. 731: Neil Gehrels
Astronomy Cast Ep. 731: Neil Gehrels By Fraser Cain & Dr. Pamela Gay Streamed live on Oct 21, 2024. Last week we talked about the Neil Gerhels Swift T...
Ep. 729: The James Webb Space Telescope
Astronomy Cast Ep. 729: The James Webb Space Telescope By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 30, 2024. Let's talk about that giant tele...
Ep. 728: Solar Scientist Eugene Parker
Astronomy Cast Ep. 728: Solar Scientist Eugene Parker By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 23, 2024. Last week, we talked about the Pa...
Ep. 727: Parker Solar Probe
Astronomy Cast Ep. 727: Parker Solar Probe By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 16, 2024. Let's look over the long life of the Parker...
Ep. 726: Looking Back Over The Summer
Astronomy Cast Ep. 726: Looking Back Over The Summer By Fraser Cain & Dr. Pamela Gay Streamed live Sep 9, 2024. We made all sorts of predictions, and...
Ep. 173: Herschel Space Observatory - REMASTER
Astronomy Cast Ep. 173: Herschel Space Observatory - REMASTER By Fraser Cain & Dr. Pamela Gay From January 18, 2009. Last week we talked about Hersche...
Ep. 172: William Herschel - REMASTER
Astronomy Cast Ep. 172: William Herschel - REMASTER By Fraser Cain & Dr. Pamela Gay From January 11, 2010. Ancient astronomers knew of 5 planets, Merc...
Ep. 88 - The Hubble Space Telescope - REMASTER
Astronomy Cast Ep. 88 - The Hubble Space Telescope - REMASTER By Fraser Cain & Dr. Pamela Gay From May 12, 2008. Our understanding of the cosmos has b...