Ep. 802: Mission Tech Series: Rocket & Spacecraft 411Help us keep Astronomy Cast ad-free: https://patreon.com/astronomycast We removed all ads from the show. We need to get to 1500 patrons to keep it this way. We need your support! Streamed live on Sep 21, 2026 Hosted by: Fraser Cain and Dr.

Sep 28 · 32 min

S20 · E801Ep. 801: The Beginning & End of Everything - Part 2Help us keep Astronomy Cast ad-free: https://patreon.com/astronomycast We removed all ads from the show. We need to get to 1500 patrons to keep it this way. We need your support! Streamed live on Sep 7, 2026. Hosted by: Fraser Cain (@fraserSep 21 · 37 min

S20Astronomy Cast Can't Go On Like ThisAfter 20 years, it's time to make some changes. With your patronage we can ditch the ads & turn up the science. Please join our Patreon community at patreon.astronomycast.comSep 15 · 9 min

S20Ep. 800: The Beginning & End of Everything - Part 1Streamed live on Sep 7, 2026. Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest) This show is supported through people like you on Patreon.com/AstronomyCast To celebrate our 20th season, we thought we'd go back right tSep 14 · 39 min

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