
Universe Today Podcast
Space news, interviews, Q&As, and exclusive content from Universe Today.
Audio versions of Fraser Cain YouTube channel.
Latest episodes

Jul 21, 2025 • 1h 10min
[BONUS] The Sky Isn’t the Limit. Interview with me on The Last Easy Mile Podcast
This is an interview with me on The Last Easy Mile podcast with Josh Farahi.
Video version: https://www.youtube.com/watch?v=l_FR_ZvPc3U&ab_channel=TheLastEasyMilePodcast
THE LAST EASY MILE: https://linktr.ee/TheLastEasyMilePodcast
In this episode, Fraser Cain—founder of Universe Today and co-host of Astronomy Cast—shares why space still matters. From watching meteor showers with your kids to seeing Saturn’s rings through binoculars in a city, Fraser offers practical ways to reconnect with awe. He reflects on raising science-minded kids, his love of tabletop RPGs, and how parents can create deeper imaginative experiences than screens can provide.
We also talk about the James Webb Space Telescope, the Mars rovers, and the Vera Rubin Observatory, which will capture time-lapse images of the sky. Fraser warns against the growing distrust of experts, advocating for humility, critical thinking, and Carl Sagan’s “baloney detection toolkit.”
📰 GUIDE TO SPACE Newsletter
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🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 18, 2025 • 21min
[Space Bites] Earth in a Void // Ancient Stellar Flyby // Resonance with Uranus
Is the Earth at the center of a giant void? Did a star fly through the Solar System billions of years ago messing up the orbits of some objects? Comet 3i/ATLAS is the oldest comet ever seen. Look at the picture to celebrate the third anniversary of Webb. And in Space Bites Plus, covering a crater on the moon with a concrete dome to build a pressurised habitat.
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00:00 Intro
00:19 Are we in a void?
https://www.universetoday.com/articles/are-we-in-a-giant-void-that-would-help-explain-the-hubble-tension
02:57 Dwarf galaxies
https://www.universetoday.com/articles/the-milky-way-could-be-surrounded-by-100-satellite-galaxies
04:08 Orbital resonance with Uranus
https://www.universetoday.com/articles/scientists-discover-uranus-has-a-dancing-partner
05:25 Clues of an ancient stellar flyby
https://www.universetoday.com/articles/astronomers-use-the-colours-of-trans-neptunian-objects-to-track-an-ancient-stellar-flyby
06:57 Oldest comet in history
https://www.universetoday.com/articles/newly-discovered-interstellar-comet-is-billions-of-years-older-than-the-solar-system
08:24 Sunspots
https://www.universetoday.com/articles/scientists-solve-400-year-old-solar-mystery
09:44 Vote results
10:19 Source of Earth's water
https://www.universetoday.com/articles/earth-was-born-with-water-no-delivery-needed
12:12 DUUUUUST
https://www.universetoday.com/articles/where-does-cosmic-dust-come-from-the-jwst-provides-an-answer
13:58 Portrait of a galaxy cluster
https://www.universetoday.com/articles/portrait-of-a-galaxy-cluster
14:44 Closest pic of the solar atmosphere
https://www.universetoday.com/articles/this-is-the-closest-picture-ever-taken-of-the-sun
15:37 JWST 3rd anniversary
https://www.universetoday.com/articles/celebrate-the-jwsts-third-anniversary-with-this-stunning-image
16:35 Guide to space
17:24 [Space bites+]
https://www.patreon.com/collection/125670
18:03 What's the deal with Patreon
📺 VIDEO VERSION
https://youtu.be/2bsKBzYtX2U
📰 GUIDE TO SPACE Newsletter
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🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 17, 2025 • 22min
[Q&A] Best Possible Space Mission, Sea Launches, Sun's Siblings
What would be the best possible space mission if budget restrictions didn't exist? Why don't we launch all rockets from ships in the sea? Where are the stars that formed with our Sun? And in Q&A+ where is the center of the Universe?
🎁 [Q&A+] Same video. No YT ads. BONUS question. FREE:
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🚀 [Overtime] Even more Q&As:
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00:00 Start
00:30 [John Hoy] Dream space mission when budget isn't a concern?
04:20 [Adam Redwine] Which places are best for launching rockets to different altitudes?
06:20 [Chris Nelsynels] How are we looking for the Sun's siblings?
07:48 [MouseDestruction] Stirling engines in space?
10:23 [Ivan M] What's the density of a black hole?
14:37 [xXPhiliPXx6541] What are the pros and cons of launching rockets from ships?
17:49 [Aaron ball] What's coming after the ISS?
📺 VIDEO VERSION
https://youtu.be/wLaLk808SpU
📰 GUIDE TO SPACE Newsletter
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🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 16, 2025 • 46min
[Interview] How to Find Your Way Home in Space
If you were dropped in a random place in space, how would you find your way home? New Horizons tackled this problem with a first interstellar navigation demonstration. Using parallax in real time to determine its position in space. How did they pull it off and what other interesting things can spacecraft do? Finding out in this interview.
😍 [Interview+] Bonus Part. No YT ads.
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🟣 Guest: Dr Tod Lauer
https://staff.noirlab.edu/tod.lauer/
📜 A Demonstration of Interstellar Navigation Using New Horizons
https://arxiv.org/pdf/2506.21666
00:00 Intro
01:48 Finding your way home from a random place in the galaxy
05:58 Test with New Horizons
19:19 Science with New Horizons after its main mission
26:02 The era of JWST
34:49 The Question to ask
37:58 Current obsessions
43:07 Final thoughts
📺 VIDEO VERSION
https://youtu.be/YcHchdHwBpw
📰 GUIDE TO SPACE Newsletter
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🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 15, 2025 • 16min
[Q&A] Enforcement of Space Treaties, Mars vs O'Neil Cylinders, India's Space Ambitions
Can somebody really enforce any space treaties and do they make any sense? What's a better future, colonies on Mars or on giant rotating spaceships? What's India's space program been up to lately? And in Q&A+, would I take a one-way ticket to Mars?
🦄 Support us on Patreon:
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00:00 Start
00:28 [Iamsick] Mars vs O'Neil cylinders
02:08 [busybillyb33] How enforceable is the Outer Space Treaty?
06:04 [Tarun Pulikanti] Thoughts on India's space station ambitions
08:23 [Doogle] How difficult is it to see the Orion Nebula?
10:21 [Larry Tilghmon] Why did Oumuamua leave our solar system so easily while we cannot?
11:58 [GTP_VEXD] What is a light year and why do we use them?
📺 VIDEO VERSION
https://youtu.be/cya7EXYCBCo
📰 GUIDE TO SPACE Newsletter
No ads. Subscribe for FREE: https://universetoday.com/newsletter
🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 11, 2025 • 19min
[Space Bites] Double Supernova // Impossible Rings // Dark Brown Dwarfs
A star detonated as a supernova, twice. Trump chooses his new NASA Administrator. Why deflecting asteroids is much more complex than we thought.And on Space Bites Plus, how your flight home could signal an alien civilization.
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00:00 Intro
00:19 Star detonated as supernova ... twice
https://www.universetoday.com/articles/a-star-detonated-as-a-supernova-twice
02:27 Rogue planet hiding in Hubble data
https://www.universetoday.com/articles/old-hubble-space-telescope-photos-unlock-the-secret-of-a-rogue-planet
03:44 Deflecting asteroids is harder than we thought
https://www.universetoday.com/articles/deflecting-asteroids-isnt-simple-according-to-new-data-from-dart
05:23 Dark matter in brown dwarfs
https://www.universetoday.com/articles/dark-matter-could-create-dark-dwarfs-at-the-center-of-the-milky-way
06:36 New interim NASA Administrator
https://www.cnn.com/2025/07/09/politics/sean-duffy-named-interim-nasa-administrator
07:38 2100+ Senior NASA Employees Gone
https://www.politico.com/news/2025/07/09/nasa-staff-departures-00444674?utm_campaign=FIRST+UP+2025-07-10&utm_content=China+s+increasingly+sophisticated+maneuvers+in+space&utm_medium=email&utm_source=ActiveCampaign
08:53 Vote results
https://www.youtube.com/@frasercain/posts
09:22 "Impossible" rings of Quaoar
https://www.universetoday.com/articles/quaoars-atmosphere-doesnt-exist-and-its-rings-shouldnt
11:08 Hubble vs JWST
https://www.universetoday.com/articles/two-powerful-space-telescopes-are-better-than-one
12:10 Sprite from the ISS
https://x.com/Astro_Ayers/status/1940810789830451563
13:30 3I/Atlas from VLT
https://www.eso.org/public/videos/potw2527a/
14:35 Newsletter
https://www.universetoday.com/newsletter
15:48 Bonus story: signalling aliens about us
https://www.universetoday.com/articles/how-your-flight-home-could-be-broadcasting-earths-location-to-aliens
16:21 Huge Patreon Q&A
https://www.patreon.com/posts/patron-questions-133776836
📺 VIDEO VERSION
https://youtu.be/v1HQGRh-Wrw
📰 GUIDE TO SPACE Newsletter
No ads. Subscribe for FREE: https://universetoday.com/newsletter
🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 10, 2025 • 19min
[Q&A] Dust VS Interstellar Travel, Nuclear Reactors on the Moon, My Favourite Lagrange Point
Will dust make interstellar travel impossible? Is Oumuamua unique in its weird cigar-like shape? How many nuclear reactors will we need on the Moon? And in Q&A+, does studying the Universe have no endgame? Answering all these questions and more in this Q&A show.
🎁 [Q&A+] Same video. No YT ads. BONUS question. FREE:
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🚀 [Overtime] Even more Q&As:
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00:00 Start
00:27 [@scottycartercom] My favourite planet and moon
00:51 [@Beedubz76] Are there any objects that are similar to Oumuamua?
03:52 [@askani21] Will dust make interstellar travel impossible?
06:29 [@fredjonestowns4213] How long until we reach Enceladus?
08:41 [HammmmerFan] How will society respond if we actually find evidence of alien life?
10:31 [@anniealexander9911] What's my favourite Lagrange point?
11:25 [@johnrasnic195] Will people put Moon bases in caverns?
12:31 [Encodedpr] How many nuclear reactors will we need on the Moon?
13:42 [@gangsterdaddy510] Data rates from distant spacecraft
📺 VIDEO VERSION
https://youtu.be/kVUxqNkwyfI
📰 GUIDE TO SPACE Newsletter
No ads. Subscribe for FREE: https://universetoday.com/newsletter
🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
📩 CONTACT FRASER
frasercain@gmail.com
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast

Jul 8, 2025 • 18min
[Q&A] Vera Rubin & Planet 9 SPECIAL
The discussion kicks off with the impressive capabilities of the Vera Rubin Observatory, pondering its potential to detect alien visitors. Curious minds consider a northern hemisphere version and even a space-bound telescope. They explore the intriguing notion of Planet 9's geological activity, while questions about sending a mission there spark excitement. The conversation wraps up with stargazing tips, highlighting the beauty of meteor showers and urging listeners to gaze at the early morning sky for planetary wonders.

Jul 7, 2025 • 59min
[Interview] Revealing the Secrets of Cosmic Dark Ages
Christiaan Brinkerink, an instrumentation systems engineer at Radboud University and member of the Radboud Radio Lab, discusses the cosmic dark ages—an era shrouded in mystery following the Big Bang. He dives into the Dark Ages Explorer mission, revealing how a lunar telescope will help study this epoch by utilizing the unique advantages of the far side of the Moon. Brinkerink also explores innovative antenna designs and the challenges of capturing low-frequency radio waves, offering insights into the early universe's formation.

Jul 4, 2025 • 19min
[Space Bites] A THIRD Interstellar Object // Pack of Quasars // Tianwen-2 Looks Back
Astronomers have discovered a third interstellar object exhibiting comet-like behavior. NASA's budget cuts pose a threat to crucial science missions, with potential cancellations on the horizon. They also discuss the discovery of the most massive white dwarf, shedding light on the life cycle of stars. In a quirky twist, a capsule containing human remains and cannabis seeds has unexpectedly crashed into the ocean. Plus, learn about exciting updates from the Tianwen-2 spacecraft as it continues its journey through the cosmos.