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Astronomy Cast

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education50 episodes indexed

Astronomy Cast

Fraser Cain & Dr. Pamela Gay

Fact-based, conversational tour through astronomy and cosmology concepts for a general audience.

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Episodes

RSS · updated 00:00Z●LIVE

S19 · E799Ep. 799: Heavy Lift RocketsAstronomy Cast Ep. 799: Heavy Lift Rockets By Fraser Cain & Dr. Pamela Gay Streamed live June 22, 2026. The Saturn 5 was a monster, capable of sending humans and a lander to the Moon and bringing them back again. But the number of heavy lifJun 29 · 39 min
S19Ep. 797: Summer in SpaceAstronomy Cast Ep. 797: Summer in Space By Fraser Cain & Dr. Pamela Gay Streamed live June 10, 2026. We're about to take a much needed 2 month hiatus. But just because we're not here doesn't mean space stops existing and doing things. TodayJun 15 · 35 min
S19 · E796Ep. 796: Oceans & Organics on MarsAstronomy Cast Ep. 796: Oceans & Organics on Mars By Fraser Cain & Dr. Pamela Gay Streamed live on Jun 1, 2026. Mars is cold & dry today, but the evidence is growing that it used to be warmer & wetter. with seas & oceans that covered large Jun 8 · 31 min
S19 · E795Ep. 795: Expanse ScienceAstronomy Cast Ep. 795: Expanse Science By Fraser Cain & Dr. Pamela Gay Streamed live on May 10, 2026. This is the final episode of our series on sci-fi universes. And this week we will tackle "The Expanse". Now we've got fusion drives, ProJun 1 · 32 min
S19 · E794Ep. 794: Stargate ScienceAstronomy Cast Ep. 794: Stargate Science By Fraser Cain & Dr. Pamela Gay Streamed live on May 10, 2026. We continue our ad-hoc miniseries through sci-fi franchises. This week we'll talk about Stargate, worm holes, mind parasites and self-reMay 18 · 39 min
S19 · E793Ep. 793: Star Trek ScienceAstronomy Cast Ep. 793: Star Trek Science By Fraser Cain & Dr. Pamela Gay Streamed live May 4, 2026. Today we continue our mini-series; evaluating the science of various sci-fi franchises. We did Star Wars last week, this week tackle Star TMay 11 · 35 min
S19 · E792Ep. 792: Star Wars ScienceAstronomy Cast Ep. 792: Star Wars Science By Fraser Cain & Dr. Pamela Gay Streamed live April 29, 2026. May the fourth be with you! Isn't that what people say on the international holiday known as Star Wars Day? Today we're gonna talk aboutMay 4 · 40 min
S19 · E775Ep. 775: The Hydrogen 21-cm LineAstronomy Cast Ep. 775: The Hydrogen 21-cm Line By Fraser Cain & Dr. Pamela Gay Streamed live on Dec 15, 2025. Atomic hydrogen is the raw material for stars, but there's a problem. It's cold & dark, but it can do a very rare trick, releasinDec 22, 2025 · 35 min
S18 · E761Ep. 761: It's Here! The Vera Rubin ObservatoryAstronomy 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 line and delivered its "first light" images.Jun 30, 2025 · 31 min
S18 · E759Ep. 759: The Commercial Space ProgramAstronomy 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 lunar surface. Some are run by the goverJun 16, 2025 · 35 min
S18 · E757Ep. 757: CubeSatsAstronomy 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 satellites: CubeSats. A mission small enough May 26, 2025 · 33 min
S18 · E756Ep. 756: SphereXAstronomy 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 "first light". Everything looks good! And noMay 19, 2025 · 28 min
S18 · E755Ep. 755: Intermediate Mass Black HolesAstronomy 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 supermassive black holes. But very little evidence May 12, 2025 · 32 min
S18 · E753Ep. 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. This is where various NASA and Chinese Apr 28, 2025 · 36 min
S18 · E752Ep. 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 on where NASA should go next with humans: Apr 21, 2025 · 37 min
S18 · E748Ep. 748: Fast Radio BurstsAstronomy 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 Radio light) and then live to do it again Mar 24, 2025 · 28 min
S18 · E746Ep. 746: Dust StormsAstronomy 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 on Titan. What causes these storms and howMar 3, 2025 · 28 min
S18 · E741Ep. 741: TechnosignaturesAstronomy 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. The more we do, the more we could be deJan 27, 2025 · 36 min
S18 · E740Ep. 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 astronomer you depend on accurate observations of stars, but there's a problem. Stars are sneaky! Jan 20, 2025 · 30 min
S18 · E739Ep. 739: Drones!Astronomy Cast Ep. 739: Drones! By Fraser Cain & Dr. Pamela Gay Streamed live January 9, 2025. From little Ingenuity to the future Firefly and all our Earth Science fliers, let's look at the buzzy scientists. NASA's Mars Ingenuity helicopteJan 13, 2025 · 32 min
S18 · E736Ep. 736: Gift Guide 2024Astronomy 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 suggest ideas for presents for the space fans in your life! What books are we reading? What Dec 9, 2024 · 38 min
S18 · E735Ep. 735: Albert EinsteinAstronomy 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. So this week it is only natural that we talk about the man himself, Albert Einstein. He revDec 2, 2024 · 37 min
S18 · E734Ep. 734: The Einstein MissionAstronomy 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. Gay. Another day, another space telescope! Today we're looking at the newly launched EinsteNov 18, 2024 · 30 min
S18 · E733Ep. 733: Euclid Of AlexandriaAstronomy 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. This week we'll talk about Euclid of Alexandria, the ancient Greek mathematician who inspireNov 11, 2024 · 28 min
S18 · E732Ep. 732: The Euclid TelescopeAstronomy 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. Hosted by: Fraser Cain and Dr. Pamela L. Gay The Euclid 208-Gigapixel image! https://www.yNov 4, 2024 · 33 min
S18 · E731Ep. 731: Neil GehrelsAstronomy 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 Telescope, this week we'll be talking about the man behind the mission. Gerhels was the priOct 28, 2024 · 31 min
S18 · E729Ep. 729: The James Webb Space TelescopeAstronomy 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 telescope that's changing everything. We have been waiting our entire careers to make this epiOct 7, 2024 · 38 min
S18 · E728Ep. 728: Solar Scientist Eugene ParkerAstronomy 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 Parker Solar Probe. As always, we like to talk about the person who inspired the mission. WhSep 30, 2024 · 30 min
S18 · E727Ep. 727: Parker Solar ProbeAstronomy 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 Solar Probe as it explores the Sun and nearby worlds. The Sun! It's that ongoing thermonucSep 23, 2024 · 31 min
S18 · E726Ep. 726: Looking Back Over The SummerAstronomy 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 some of the stuff we didn't know about last July, somehow, we still don't know about as weSep 16, 2024 · 38 min
S17 · E173Ep. 173: Herschel Space Observatory - REMASTERAstronomy Cast Ep. 173: Herschel Space Observatory - REMASTER By Fraser Cain & Dr. Pamela Gay From January 18, 2009. Last week we talked about Herschel the people – William Herschel, his sister Caroline, and his son John. This week we look Aug 26, 2024 · 25 min
S17 · E172Ep. 172: William Herschel - REMASTERAstronomy Cast Ep. 172: William Herschel - REMASTER By Fraser Cain & Dr. Pamela Gay From January 11, 2010. Ancient astronomers knew of 5 planets, Mercury, Venus, Mars, Jupiter and Saturn – 6 if you count Earth. And then in 1781, William HerAug 19, 2024 · 26 min
S17 · E88Ep. 88 - The Hubble Space Telescope - REMASTERAstronomy Cast Ep. 88 - The Hubble Space Telescope - REMASTER By Fraser Cain & Dr. Pamela Gay From May 12, 2008. Our understanding of the cosmos has been revolutionized by the Hubble Space Telescope. The breathtaking familiar photos, like tAug 12, 2024 · 33 min
S17 · E162Ep. 162: Edwin Hubble - REMASTERAstronomy Cast Ep. 162: Edwin Hubble - REMASTER By Fraser Cain & Dr. Pamela Gay From November 2, 2009. You might know the name "Hubble" because of the Hubble Space Telescope. But this phenomenal observatory was named after one of the most iAug 5, 2024 · 27 min
S17 · E219Ep. 219 - Planck Mission - REMASTERAstronomy Cast Ep. 219 - Planck Mission - REMASTER By Fraser Cain & Dr. Pamela Gay From February 7, 2011. Another mission named after a famous physicist. This time we're looking at the Planck mission, designed to study the Cosmic Microwave Jul 29, 2024 · 29 min
S17 · E218Ep. 218 REMASTER - Max PlankAstronomy Cast - Ep. 218 REMASTER - Max Plank By Fraser Cain & Dr. Pamela Gay From Jan 31, 2011. It's time for another action-packed double episode, where we meet a man and his mission. This time around its German physicist Max Planck, consJul 22, 2024 · 29 min
S16Bonus Content: The week of too much newsIn this bonus episode, we bring you behind the scenes audio from our June 10 pre-show discussion about the "far too much news" that occurred the week of June 3, 2024.Jul 15, 2024 · 21 min
S17 · E720Ep. 720: Galaxy Series - Elliptical GalaxiesAstronomy Cast - Ep. 720: Galaxy Series - Elliptical Galaxies by Fraser Cain & Dr. Pamela Gay Streamed live on Apr 30, 2024. Our galaxy series continues with elliptical galaxies. Unlike other types, these are large, smooth with very few disMay 20, 2024 · 29 min
S17 · E719Ep. 719: Galaxy Series - Spiral GalaxiesAstronomy Cast Ep. 719: Galaxy Series - Spiral Galaxies by Fraser Cain & Dr. Pamela Gay Streamed live on Apr 30, 2024. Our galaxy series continues, on to spiral galaxies. In fact, you're living in one right now, but telescopes show us the vMay 13, 2024 · 33 min
S17 · E718Ep. 718: Galaxy Series - Dwarf GalaxiesAstronomy Cast Ep. 718: Galaxy Series - Dwarf Galaxies by Fraser Cain & Dr. Pamela Gay Streamed live on Apr 30, 2024. It's time to begin a new mini-series, where we'll look at different classes of galaxies. Today, we'll start with the dwarfMay 6, 2024 · 31 min
S17 · E717Ep. 717: Understanding the Ages of Distant Cosmic ObjectsAstronomy Cast Ep. 717: Understanding the Ages of Distant Cosmic Objects by Fraser Cain & Dr. Pamela Gay Streamed live on Apr 22, 2024. How old is that star? That planet? That nebula? Figuring out the ages of astronomical objects is surprisApr 29, 2024 · 30 min
S17 · E716Ep. 716 - The God**** Particle - Remembering Peter HiggsAstronomy Cast Ep. 716 - The God**** Particle - Remembering Peter Higgs by Fraser Cain & Dr. Pamela Gay Streamed live on Apr 15, 2024. Last week, we learned about the death of Peter Higgs, a physicist and discoverer of the particle that beaApr 22, 2024 · 29 min
S17 · E715Ep. 715: Total Eclipse of the Science: Experiments During the EclipseAstronomy Cast Ep. 715: Total Eclipse of the Science: Experiments During the Eclipse by Fraser Cain & Dr. Pamela Gay Streamed live April 1, 2024. NO JOKES! How to watch a solar eclipse and do some science! The next great eclipse is upon us,Apr 8, 2024 · 32 min
S17 · E714Ep. 714: Orbital ResonancesAstronomy Cast Ep. 714: Orbital Resonances by Fraser Cain & Dr. Pamela Gay Streamed live on Mar 25, 2024. Several of the planets and moons in the Solar System are in orbital resonance, orbiting in a geometric lockstep. And not just the SolaApr 1, 2024 · 28 min
S17 · E713Ep. 713: Solar System VolcanoesAstronomy Cast Ep. 713: Solar System Volcanoes by Fraser Cain & Dr. Pamela Gay Streamed live on Mar 18, 2024. Last week was one of the most exciting meetings we've seen from the Lunar and Planetary Science Conference, with hundreds of annouMar 25, 2024 · 34 min
S17 · E712Ep. 712: How Peer Review FailsAstronomy Cast Ep. 712: How Peer Review Fails by Fraser Cain & Dr. Pamela Gay Streamed live on Mar 11, 2024. You've probably heard that the best kind of science is peer-reviewed research published in a prestigious journal. But peer review hMar 18, 2024 · 39 min
S17 · E711Ep. 711: NASA Innovative Advanced Concepts (NIAC)Astronomy Cast Ep. 711: NASA Innovative Advanced Concepts (NIAC) by Fraser Cain & Dr. Pamela Gay Streamed live March 4, 2024. NASA works on many missions using tried and true technology, but they also invest in creative ideas that could driMar 11, 2024 · 32 min
S17 · E710Ep. 710: NASA's Commercial Lunar Payload Services (CLPS) ProgramAstronomy Cast Ep. 710: NASA's Commercial Lunar Payload Services (CLPS) Program by Fraser Cain & Dr. Pamela Gay Streamed live on Feb 26, 2024. In the olden days, NASA developed its missions using a variety of in-house engineers and externalMar 4, 2024 · 36 min
S17 · E709Ep. 709: Space WeaponsAstronomy Cast Ep. 709: Space Weapons by Fraser Cain & Dr. Pamela Gay Streamed live on Feb 19, 2024. [My apologies for Fraser's audio dropouts. We're not sure how it happened as it wasn't happening at his studio. Audio is a black art, IMHO.Feb 26, 2024 · 32 min
S17 · E708Ep. 708: What Goes Into Sample Return Missions From Asteroids & Comets?Astronomy Cast Ep. 708: What Goes Into Sample Return Missions From Asteroids & Comets? by Fraser Cain & Dr. Pamela Gay Streamed live Feb 12, 2024. Last week we talked about sample return missions from the Moon and Mars, but scientists have Feb 19, 2024 · 36 min

Source: Episodes via the show's public RSS feed · as of Sep 2, 2026 00:00 UTC

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