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- 🇦🇺AU · Natural Sciences#1575K to 30K
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25K to 100K🎙 ~2x weekly·514 episodes·Last published 2d ago - Monthly Reach
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50K to 200K🇿🇦50%🇦🇺15%🇳🇱5%+6 more - Active Followers
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20K to 80K
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From 14 epsHosts
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Recent episodes
Ep. 798: Our Summer Media List
Jun 22, 2026
Unknown duration
Ep. 797: Summer in Space
Jun 15, 2026
Unknown duration
Ep. 796: Oceans & Organics on Mars
Jun 8, 2026
59m 11s
Ep. 795: Expanse Science
Jun 1, 2026
33m 55s
Ep. 794: Stargate Science
May 18, 2026
40m 44s
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| Date | Episode | Topics | Guests | Brands | Places | Keywords | Sponsor | Length | |
|---|---|---|---|---|---|---|---|---|---|
| 6/22/26 | ![]() Ep. 798: Our Summer Media List | Streamed live on Jun 15, 2026. Well, we’re just a couple of weeks away from summer hiatus and so it’s time to give you some homework. Here’s our list of stuff we’ve been reading watching and playing. This should fill the Astronomy-Cast-shaped hole in your media landscape. On the plane, on the beach, from the passenger seat in a car, summer is a time for escaping into a good book, video, or game. From classics to the latest releases, here are our recommendations for keeping your brain occupied while your body is renewed. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, Burry Gowen, David, David Rossetter, Ed, Eric Lee, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Joe McTee, Michael Purcell, Sergey Manouilov, Siggi Kemmler | — | ||||||
| 6/15/26 | ![]() Ep. 797: Summer in Space | Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) 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. Today, let’s give a preview of the big events due to happen in space this summer so you can prepare yourself and make sure you don’t miss a thing! From meteors to moon landings and more, join Fraser and Pamela as the look at what you can enjoy this summer, after we go to hiatus in July. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, Burry Gowen, David, David Rossetter, Ed, Eric Lee, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Joe McTee, Michael Purcell, Sergey Manouilov, Siggi Kemmler | — | ||||||
| 6/8/26 | ![]() Ep. 796: Oceans & Organics on Mars✨ | Marslife search+4 | — | Patreon.com/AstronomyCast | Mars | Marsoceans+5 | — | 59m 11s | |
| 6/1/26 | ![]() Ep. 795: Expanse Science✨ | sci-fi universesThe Expanse+5 | — | The Expanse | — | The Expansesci-fi+5 | — | 33m 55s | |
| 5/18/26 | ![]() Ep. 794: Stargate Science✨ | sci-fiStargate+3 | — | Stargate | — | Stargateworm holes+3 | — | 40m 44s | |
| 5/11/26 | ![]() Ep. 793: Star Trek Science✨ | Star Trekscience fiction+5 | — | Patreon.comStar Trek+1 | — | Star Trekscience fiction+5 | — | 57m 33s | |
| 5/4/26 | ![]() Ep. 792: Star Wars Science✨ | Star Warsscience+4 | — | — | — | Star Warsscience+5 | — | 57m 10s | |
| 4/27/26 | ![]() Ep. 791: Chang'e Sample Return✨ | Chang'e sample returnChinese space program+3 | — | Chang’eChinese space program | — | Chang'esample return+5 | — | 1h 00m 28s | |
| 4/20/26 | ![]() Ep. 790: Meteorites From Other Worlds✨ | meteoritesspace exploration+3 | — | — | — | meteoritesMoon+5 | — | 53m 25s | |
| 4/5/26 | ![]() Ep. 789: What Happens When a Planet's Star Dies✨ | stellar evolutionplanetary survival+3 | — | — | — | star deathred giant+3 | — | 52m 58s | |
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| 3/30/26 | ![]() Ep. 788: Life’s Molecules Form in Space✨ | origin of lifemolecules in space+4 | — | — | — | life's moleculesspace+5 | — | 58m 41s | |
| 3/23/26 | ![]() Ep. 787: Evolved Stars (They're not dead yet!)✨ | evolved starsstellar evolution+4 | — | NASA Galex | — | evolved starsstellar evolution+5 | PatreonAstronomyCast | 56m 08s | |
| 3/16/26 | ![]() Ep. 786: Wolf-Rayet Stars✨ | Wolf-Rayet starssupernovae+3 | — | NASAESA+2 | — | Wolf-Rayet starssupernova+3 | — | 55m 50s | |
| 3/9/26 | ![]() Ep. 785: Magnetars✨ | magnetarsneutron stars+4 | — | Astronomy Cast | — | magnetarsneutron stars+3 | — | 1h 02m 00s | |
| 3/2/26 | ![]() Ep. 784: Pulsar-Powered Science✨ | pulsarsgravitational waves+3 | — | NASACXC+2 | — | pulsarsgravitational waves+5 | — | 32m 39s | |
| 2/23/26 | ![]() Ep. 783: Cataclysmic Variable Stars✨ | cataclysmic variable starsbinary star systems+4 | — | NASACXC+1 | — | variable starswhite dwarf+3 | — | 51m 33s | |
| 2/16/26 | ![]() Ep. 782: Luminous Fast Blue Optical Transients | Streamed live on Feb 13, 2026. Modern astronomy has found that the Universe can surprise us. Here’s one which astronomers have called Luminous Fast Blue Optical Transients. They’re kinda like supernovas, they’re kind of like gamma ray bursts, but they’re not like them. So what are they? In the distant Universe, are blue light flashes, bright and hard to understand. These objects, uncreatively named "Luminous Fast Blue Optical Transients," are just the kind of puzzle astronomers love. In this episode, we look at their discovery and our current understanding of what they might be. Image credit: NASA, ESA, NSF’s NOIRLab, Mark Garlick, Mahdi Zamani This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero | — | ||||||
| 2/9/26 | ![]() Ep. 781: Awakening Black Holes | Streamed live on Feb 2, 2026. One long standing mystery in astronomy were the quasars. Incomprehensible energy blasting out of a point-like source, billions of light years away. We now know these are actively feeding supermassive black holes, which can turn off and on in a startlingly short period of time. Today: When black holes awaken! Our Universe is filled with sleeping monsters. And sometimes, whether we want it or not, they wake up hungry. In this episode, we take a look at the science behind how and why black holes of all sizes can go from nothing to the triggers of massive high-energy power release. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero Image credit: LOFAR/Pan-STARRS/S. Kumari et al. | — | ||||||
| 2/2/26 | ![]() Ep. 780: When Asteroids & Comets Attack! | Hosted by: Fraser Cain (@frasercain ) and Dr. Pamela L. Gay (@CosmoQuest ) Streamed live on Jan 26, 2026. We live in a cosmic shooting gallery. It’s not a matter of “if” but “when”! Dinosaurs, blah, blah, blah. You know the drill. But seriously, folks, it’s raining rocks & ice out there! How seriously should we take it? What happens when a variety of different objects hit the Earth? Different kinds of objects affect Earth very differently when they impact. Let's discuss what makes an impactor more or less dangerous. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero | — | ||||||
| 1/19/26 | ![]() Ep. 779: Milankovitch Cycles | Streamed live on Jan 12, 2026. Hosted by: Fraser Cain (@frasercain ) and Dr. Pamela L. Gay (@CosmoQuest ) Humans live short lives, and from our perspective the seasons are something that come and go with perfect regularity. But astronomers know the terrible truth! And that there are cycles that slowly shift over tens of thousands of years, shifting the cycles and the Earth’s climate. Today we’ll talk about the Milankovich Cycles! The Earth's orbit, tilt, and other physical attributes aren't quite as constant as you might think! Come learn how long-term changes do and don't affect our climate. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero | — | ||||||
| 1/12/26 | ![]() Ep. 778: Dyson Swarms | Streamed live on Jan 5, 2026. Freeman Dyson asked a fascinating question. What would it look like if a civilization was using all the energy coming from their star? And what form would this take? This introduced the concept of a Dyson Sphere, or more realistically, a Dyson Swarm surrounding a star. But if you’re skeptical about the concept, you’re in good company. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero With special guest star Stella! | — | ||||||
| 1/5/26 | ![]() Ep. 777: The Eddington Limit | Streamed live on Dec 29, 2025. How big can a star get? This is a calculation made by one of the original pioneers of modern astronomy, Sir Arthur Eddington. And it’s named after him, the Eddington Limit. Now, astronomers are finding examples of giant black holes early in the Universe, calling into question some of Eddington’s assumptions. Let’s explore this fascinating concept! Why are stars sphere-ish? Why do blackholes not eat everything? Why do pulsating stars pulsate? It all comes down to work done by Eddington at the beginning of the last century, and today we're going to look back at Eddington's work and all its applications in modern Astronomy. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero | — | ||||||
| 12/29/25 | ![]() Ep. 776: The Matter - Antimatter Dichotomy | Streamed live on Dec 22, 2025. Shortly after the big bang there were almost exactly the same amounts of matter and antimatter in the Universe, but there was just enough of a difference that we live in a matter-dominated Universe. But it didn’t have to be that way! Explaining this mystery has been one of the great mysteries in astronomy, and today we’ll see if there’s been any progress! Why is the Universe the way it is? Specifically, why is it made mostly of matter? This is the question we'll look at today! This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero | — | ||||||
| 12/22/25 | ![]() Ep. 775: The Hydrogen 21-cm Line | 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, releasing a photon in a very specific wavelength, known as the 21 centimeter line. And thanks to this wavelength astronomers have mapped out star forming regions across the Milky Way, the Universe and into the Dark Ages! This forbidden transition of Hydrogen has led to the mapping of galaxy rotation, a cool classroom application of quantum mechanics, and weirdly no Nobel prize. In this episode, Fraser and Pamela take a look at this line's out-of-proportion awesomeness! This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero | — | ||||||
| 12/8/25 | ![]() Ep. 774: How Does Bad Science Happen? | Hosted by: Fraser Cain and Dr. Pamela L. Gay. Streamed live on Nov 8, 2025. [Editor's Note: Fraser says "Episode 773" at the head of the show. Not to worry, he was just confused. They recorded a few episodes out of sequence. I fixed the issue in the regular non-FullRaw episode.] Scientific expertise is under attack on all fronts with concerns coming from politicians and the public. While most of this is unwarranted and politically motivated, there can be germ of truth. Bad science does happen, but how? How is it that papers that very few believe still make it through peer review and to publication? Why do professors at prominent universities get quoted saying things that seem to be fiction? In this episode, we consider the case for letting potentially impossible things make it to publication. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero | — | ||||||
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Chart Positions
10 placements across 9 markets.
Chart Positions
10 placements across 9 markets.

























