Best Astronomy Cast Podcasts (2025)

1
Ep. 771: Comet Tails 32:32

Play Pause

4h ago32:32

32:32

Astronomy Cast Ep. 771: Comet Tails By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 8, 2025. With the arrival of the comet 3I/Atlas (Asteroid Terrestrial-impact Last Alert System), the world is getting a crash course in comets, their behavior, and of course their tails. Today we're going to talk about comets and their tails, why they exist, ho…

1
Astronomy Cast Ep. 771: Comet Tails 33:10

27m ago33:10

33:10

https://www.youtube.com/watch?v=whMphW1Tb5I Hosted by: Fraser Cain and Dr. Pamela L. Gay Streamed live on Nov 8, 2025. With the arrival of the comet 3I/Atlas (Asteroid Terrestrial-impact Last Alert System), the world is getting a crash course in comets, their behavior, and of course their tails. Today we're going to talk about comets and their tail…

1
Ep. 770: The Ethics of Mars Exploration 51:14

14h ago51:14

51:14

Streamed live on Nov 3, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense and sacrifice, and there are some tricky problems that we haven't solved yet. Although we could live on Mars, should we? There is a famous quote from Jurassi…

1
Ep. 771: Comet Tails 37:50

1h ago37:50

37:50

Streamed live on Nov 8, 2025. With the arrival of the comet 3I/Atlas (Asteroid Terrestrial-impact Last Alert System), the world is getting a crash course in comets, their behavior, and of course their tails. Today we're going to talk about comets and their tails, why they exist, how they grow, why they can be different colors and how they can be so…

1
Skeptic Check: String Theory 54:00

23m ago54:00

54:00

The idea that the universe is made of tiny vibrating strings was once the science theory du jour. String theory promised to unite the disparate theories describing particles and gravity, and many people, not just scientists, were optimistic that a theory of everything might be within our grasp. But here we are, many years later, and string theory d…

1
Travelers in the Night Eps. 349E & 350E: Trappist-1 Planets & Brute 6:05

19m ago6:05

6:05

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From August 2025. Today's 2 topics: - The Trappist-1 planetary system located about 40 light years away in the constellation of Aquarius consists…

1
ASTROMAN - Dark Sky Astrophotography in Dark Sky Regions 5:56

1h ago5:56

5:56

Episode 11. "ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating scie…

1
EVSN - JWST's Picture Album of Baby Stars, Planets, Moons & More 29:20

14m ago29:20

29:20

From November 5, 2025. In this episode, we look at some of our latest discoveries about the formation of star systems, including planets and moons, and the growth of black holes. We also take a closer look at our brightening skies, and the missions set to make things worse. We also cover the latest tales from the launch pad. We've added a new way t…

1
Cosmic Perspective - Veteran of 5 Space Shuttle Missions, Capt. Robert "Hoot" Gibson 55:53

3h ago55:53

55:53

Hosted by Andy Poniros. Info: Author, fighter pilot, test pilot, & veteran of 5 Space Shuttle missions, Captain Robert "Hoot" Gibson discusses his books, as well as his fighter pilot experiences in the Vietnam war, & his Space Shuttle missions... Including piloting the 1st untethered astronaut spacewalk, mission STS-41B & his perilous top secret mi…

1
UNAWE Space Scoop: Lonely Planet — The Hungriest Exoplanet 6:14

4h ago6:14

6:14

https://spacescoop.org/en/scoops/2524/lonely-planet-the-hungriest-found-in-space/ Hosted by Richard Drumm, our editor. You've probably heard of exoplanets. Planets that orbit stars other than our Sun. But did you know that there are objects with a mass similar to a planet that float free in space, that don't orbit a star? These lonely wanderers are…

1
Exoplanet Radio - Epsilon Indi Ab: A Twin of Jupiter 7:09

39m ago7:09

7:09

Hosted by Tony Darnell. From August 17, 2024. An international team of astronomers has directly imaged this exoplanet, one of the coldest ever seen. The team observed Epsilon Indi Ab using the coronagraph on Webb's Mid-Infrared Instrument. Only a few tens of exoplanets have ever been directly imaged by space- and ground-based observatories. These o…

1
Ep. 770: The Ethics of Mars Exploration 41:51

39m ago41:51

41:51

Astronomy Cast Ep. 770: The Ethics of Mars Exploration By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 3, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense and sacrifice, and there are some tricky problems that we haven't solv…

1
Astronomy Cast Ep. 770: The Ethics of Mars Exploration 42:25

3d ago42:25

42:25

https://www.youtube.com/watch?v=14QKJkt3cIE Streamed live on Nov 3, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense and sacrifice, and there are some tricky problems that we haven't solved yet. Although we could live on Mars, sho…

1
The Moon's Mystery and Meteors This Week 3:32

1d ago3:32

3:32

Overnight Tuesday to Wednesday is the peak of the Northern Taurid Meteor Shower, which radiates into the night from near the star cluster of the Pleiades, in the constellation Taurus, the Bull. Take note that this meteor shower is known to produce fireballs!

1
Solar Good 58:45

5d ago58:45

58:45

In Brazil, leaders from across the globe are gathering for COP30, the premier climate summit in the world. For the first time, the U.S. is sitting it out, after exiting the Paris Agreement. There is, however, a ray of hope in the global efforts to reduce fossil fuel emissions. Bill McKibben, an environmentalist and journalist who describes himself …

1
Travelers in the Night Eps. 347E & 348E: Life's Parts & 2 Headed Space Worm 6:05

5d ago6:05

6:05

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From July & August 2025. Today's 2 topics: - 24 hours a day, 16,600 feet above sea level in the high dry desert of northern Chile, the 66 antenna…

1
Space Stories - Cradles in the Cosmic Mist: Meeting the Nebula 9:16

3d ago9:16

9:16

Hosted by Avivah Yamani, our Director. From latin "nebula" to stellar nurseries & ghostly shells, this episode dives into emission, reflection, dark, planetary nebulae and supernova remnants. These are the cosmic clouds at the start of star life and at the end of star life. Cradles and echoes of starlight, all in one story! We've added a new way to…

1
EVSN - Strong Evidence Found That Muons Deviate From Standard Model 26:43

7d ago26:43

26:43

From April 14, 2021. Fermilab released the first results of their Muon g-2 experiment this week, and the fundamental particles don't behave as predicted by the Standard Model of particle physics. Plus, dust, more dust, Martian water (again), and a review of Packing for Mars by Mary Roach. We've added a new way to donate to 365 Days of Astronomy to …

1
Actual Astronomy - Observer's Calendar For November 39:38

5d ago39:38

39:38

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. [email protected] Episode 507. 1st - Carbon Star V Air best tonight 2nd - Saturn Neptune and Moon congregate in evening sky 4th - Two Shadows on Jupiter IO and Euorpa after 10pm here for us so that's midnight EST. 5th - Full Moon (closest moon of the year) Aste…

1
Awesome Astronomy - Comet 3I/ATLAS & Cerne Abbas Star Party 1:09:07

1d ago1:09:07

1:09:07

Paul Hill, Ralph Wilkins and Dr. Jenifer "Dr. Dust" Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce. November Part 1. Time for a Comet 3I/ATLAS deep dive, a chat about Paul's recent visit to the Cerne Abbas Starparty in Dorset and our new extended skyguide. We've added a new way to donate to 365 Days of Astronomy to support e…

1
Let the Moon Enkindle and Enflame Your Soul 2:48

2d ago2:48

2:48

Wednesday's "Super Moon" is like a mighty cosmic mirror focusing celestial light toward Earth, to enkindle and enflame human hearts with enthusiasm for what's good and true.

1
Ask A Spaceman Ep. 259: Where Exactly is the Edge of the Universe? 25:22

2d ago25:22

25:22

Hosted by Dr. Paul M. Sutter. Is the Universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http:/…

1
Astronomy Cast Ep. 34: Discovering Another Earth 29:13

3d ago29:13

29:13

http://www.astronomycast.com/archive/ From April 29, 2007. What a week! Astronomers announced the discovery of an Earth-sized planet orbiting the nearby star Gliese 581! We talk about the technique used to discover the planet, the possibilities of finding even smaller planets, and what the future holds for finding another Earth. We've added a new w…

1
Katrina and the River 1:07:39

3d ago1:07:39

1:07:39

“The Mississippi River will always have its own way; no engineering skill can persuade it to do otherwise,” said Mark Twain. In this, our final episode marking the 20th anniversary of Hurricane Katrina, we consider how efforts to control the Mighty Mississippi – a river engineered from its Minnesota headwaters to its Gulf Coast outlet – have respon…

1
Travelers in the Night Eps. 345E & 346E: Asteroid Alert & Finding Treasure 6:05

12d ago6:05

6:05

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From July 2025. Today's 2 topics: - When Asteroid hunters discover a new object it is given a score ranging from 0 which means it is likely to be…

1
Guide to Space - Is The Universe Perfect For Life? Understanding the Anthropic Principle 6:37

5d ago6:37

6:37

https://www.youtube.com/watch?v=a8dASH8Bg_M From Oct 19, 2015. Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare minimum for human survival. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.pat…

51
EVSN - Giant Black Holes Cosplay as Little Red Dots 28:07

6d ago28:07

28:07

From October 15, 2025. The Universe is hard enough to figure out without one kind of object dressing up as another, but - just in time for Halloween - researchers have figured out that the Little Red Dot in the early Universe just might be massive black holes surrounded in a costume of glowing red gas. Also in this episode, Hyabusa2's amusingly tin…

1
H'ad Astra Historia - Ep. 206: The History of HAD 40:15

9d ago40:15

40:15

Today's guest: Prof. Kenneth Rumstay, emeritus of Valdosta State Univeristy, talks with us today about the history of the Historical Astronomy Division. We'll learn not only about how it got started, but also about how HAD works for its members today. H'ad astra historia is the official podcast for the Historical Astronomy Division of the American …

101
Cheap Astronomy - Dear CA Ep. 126: Going Deeper 14:17

13d ago14:17

14:17

Hosted by Steve Nerlich. Dear Cheap Astronomy – What is the right message to send to the aliens? Keen listeners may be familiar with Cheap Astronomy's ongoing despair at Earth's lacklustre attempts at communication with the wider Universe. A few episodes back we ran through a history of deliberate communications to date, about 90 per cent of which …

1
Moon Casts its Shadow Over the Celestial Gateway 3:24

16d ago3:24

3:24

The constellation Capricorn is the “gateway of the gods” and this week the Moon casts its shadow across this gate when it occults the brightest star there the night before Halloween, when preparations are being made to travel about imitating malignant spirits and fantastical creatures.

1
Deep Astronomy - Stellina Telescope Review: The Amateur Astronomer's Antidote to Light Pollution 20:47

11d ago20:47

20:47

Hosted by Tony Darnell. From Dec 19, 2019. Get Stellina Telescope Here (affiliate link): http://bit.ly/2WJrPzr Here are my thoughts on a brand new telescope for amateur astronomers that was released by Vaonis, a French company that has done something remarkable with the Stellina telescope, they've created a fully-automated, self-contained optical s…

1
Ep. 769: Little Red Dots 1:03:15

10d ago1:03:15

1:03:15

Streamed live on Oct 20, 2025. New instruments bring new mysteries, and when James Webb came on line it uncovered a collection of strange, compact, bright objects shifted deeply into the red end of the spectrum. These were dubbed "Little red dots" or LRDs. And the astronomical community continues to puzzle over what they are. When JWST first peered…

1
Ep. 769: Little Red Dots 30:40

13d ago30:40

30:40

Astronomy Cast Ep. 769: Little Red Dots By Fraser Cain & Dr. Pamela Gay Streamed live on Oct 20, 2025. New instruments bring new mysteries, and when James Webb came on line it uncovered a collection of strange, compact, bright objects shifted deeply into the red end of the spectrum. These were dubbed "Little red dots" or LRDs. And the astronomical …

151
Astronomy Cast Ep. 769: Little Red Dots 31:13

18d ago31:13

31:13

https://www.youtube.com/watch?v=vSVS2x-8eG4 Hosted by: Fraser Cain and Dr. Pamela L. Gay Streamed live on Oct 20, 2025. New instruments bring new mysteries, and when James Webb came on line it uncovered a collection of strange, compact, bright objects shifted deeply into the red end of the spectrum. These were dubbed "Little red dots" or LRDs. And …

1
The Decomposers 56:59

11d ago56:59

56:59

What happens to us after we die is as much a question for anthropology and ecology as it is for theology. Death and decay are not comfortable subjects, but some scientists study them unflinchingly, knowing that doing so yields valuable scientific insights about decomposition. We hear about The Body Farm at the University of Tennessee, Knoxville whe…

1
Travelers in the Night Eps. 343E & 344E: 3 Explorers & Future Impactor 6:05

11d ago6:05

6:05

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org From July 2025. Today's 2 topics: - Recently, my Grandsons, Dane and Hank joined our asteroid hunting team at the Catalina Sky Survey 60 inch tel…