Space Nuts: Astronomy Insights & Cosmic Discoveries

Professor Fred Watson and Andrew Dunkley

Black Holes

Dark Matter

Mars

James Webb Space Telescope

NASA

Dark Energy

Gravitational Waves

Titan

Gravity

Exoplanets

Spacex

Astrobiology

3I Atlas

Astronomy

Moon

International Space Station

Time Dilation

Hubble Tension

Astrophysics

Big Bang

Join Professor Fred Watson and Sci-Fi Author Andrew Dunkley on Space Nuts as they delve into astronomy, space travel, and cosmic mysteries. Explore groundbreaking discoveries and listener Q&A in captivating discussions. Follow us on social media to engage with our community!Two episodes a week with news and explainer focused editions published on Thursday's and our Listener Q&A focused edition on ... more

1.2k ratings

Publishes	Twice weekly	Episodes	742	Founded	10 years ago
Number of Listeners		Categories	AstronomyScienceNatural Sciences

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Latest Episodes

Stellar Q&A: Unraveling Fusion Mysteries, Martian Caves & Solar Cycles

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Cosmic Queries: Unraveling Stellar... more

1 Jun 2026 • 39 min

Exoplanet Expeditions: Discovering the Cosmic Diversity Beyond Our Solar System

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Exoplanets: The Cosmic Neighbou... more

29 May 2026 • 57 min

Navigating Time, Saturn's Mysteries & Planetary Favourites | A Q&A Episode

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Time Travel, Saturn's Rings, and Favourite... more

25 May 2026 • 1 hr

Astrobiology Adventures: Exploring Life Beyond Earth

Astrobiology: The Search for Life Beyond Earth In this special edition of Space Nuts, hosts Andrew Dunkley and Professor Jonti Horner delve into the captivating field of astrobiology. With Professor Fred Watson away, Jonty brings his expertise to exp... more

23 May 2026 • 1 hr 9 min

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Recent Guests

Andrea Tham

Associate Professor, University of Massachusetts & Sam Hurst author figure cited in discussion

University of Massachusetts

Episode: Supercharged Neutrinos, Exploding Black Holes & Lunar Mysteries Uncovered | Q&A

Martin Berman Gorvine

Writer, guest who posed a sci-fi query about Peel Gibb and faster-than-light travel

Writer/guest

Episode: Angular Momentum, Cosmic Time Dilation & Dark Matter Mysteries Unraveled | Q&A

Sunny Skies

Listener who asked a question about Mars water

Listener/Space Nuts audience

Episode: Relativistic Beaming, Martian Waters & Cosmic Trash: The Space Nuts Q&A

Martin Berman-Gorwein

Writer extraordinaire in many genres

Episode: Solar Secrets, Cosmic Siblings & the Quest for Breathable Exoplanets

Michelle Doherty

First female Astronomer Royal and notable planetary scientist

Episode: Little Red Dots, Astronomer Royal & Life on Mars

Heidi Campo

Guest host and space expert

Episode: Dark Energy, Cosmic Selfies & Baby Moons

Doug Stone

Operator at Bruno Doon State Park Observatory and Planetarium

Bruno Doon State Park Observatory and Planetarium

Episode: Black Holes, Cosmic Questions & TRAPPIST Tales

Mark Rabelais

Listener from Baton Rouge, Louisiana

Episode: Black Holes, Cosmic Questions & TRAPPIST Tales

Professor Jonti Horner

Professor of Astrophysics at the University of Southern Queensland

University of Southern Queensland

Episode: Cosmic Queries, Jovian Mysteries & Martian Quakes: #494 - The Great Space Q&A

Hosts

Andrew Dunkley

Host of Space Nuts; science writer/author; various affiliations with Space Nuts platforms

Frederick Watson

Professor and Co-host; astronomer at large; frequent collaborator on Space Nuts

Reviews

4.8 out of 5 stars from 1.2k ratings

Excellent podcast
Excellent way to learn about space and things with good humour.
Outstanding in all ways keep up the great work.
Apple Podcasts
5
Wibh
United Kingdom2 months ago
ARE THEY EVEN TALKING ABOUT IT
LLL boo boo boo😒😒😒 stupid stupid stupid
Apple Podcasts
1
Obliterated creeper
United States2 months ago
My Weekly Education
Thanks for the weekly education, facts and entertainment! Keep up the fun times! 🇨🇦
Apple Podcasts
5
coolfactor
Canada4 months ago
Jabbering Jibberish
If you’re keen on listening to a pair of boomers wank on about cruise ship holidays and golf this is the podcast for you.
Apple Podcasts
1
kiwidogman
New Zealand4 months ago
The right side of history
Space IS nuts. I like this pod, I see people leaving negative reviews on politics. In the US its influence on space is notable. Just be on the right side of history.
Apple Podcasts
5
Pizzamonster817nomnom
United States7 months ago

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Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Positive feedback highlights accessibility of complex topics and entertaining storytelling.

Listeners praise clear explanations and engaging banter between hosts.

Some critiques note overly political remarks or requests for tighter listener-question editing.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts	#8	United States/Science/Astronomy
Apple Podcasts	#155	United States/Science
Apple Podcasts	#9	Canada/Science/Astronomy
Apple Podcasts	#12	United Kingdom/Science/Astronomy
Apple Podcasts	#136	Canada/Science
Apple Podcasts	#182	United Kingdom/Science

Talking Points

Recent interactions between the hosts and their guests.

Supercharged Neutrinos, Exploding Black Holes & Lunar Mysteries Uncovered | Q&A

Q: Two-part: first, how does solar system formation explain planets with vastly different compositions despite the Sun being mostly hydrogen; second, how fast could our solar system move through the galaxy before we'd notice changes?

Planet formation hinges on a protoplanetary disk where inside the ice line rocky planets form and beyond it gas giants form due to abundant hydrogen and helium; exoplanet findings have shown migration and diverse outcomes that refine this model. Regarding galactic motion, moving at relativistic speeds through a dense stellar neighborhood would alter the sky's appearance and trigger more frequent close stellar encounters, but the Earth–Sun system's local dynamics would still broadly follow its orbit unless speeds were extreme.

Supercharged Neutrinos, Exploding Black Holes & Lunar Mysteries Uncovered | Q&A

Q: Why does the dark side of the Moon look smoother on average and why are craters so shallow across the Moon, including very large basins like Serenitatis?

The far side is more heavily crusted in some theories, and the near side has large flood-basalt plains (mare) that conceal older topography; together with the physics of crater formation, larger impacts create molten pools and wall slumping that deepen and then flatten the floors, producing shallower, complex craters.

Supercharged Neutrinos, Exploding Black Holes & Lunar Mysteries Uncovered | Q&A

Q: I just read that a supercharged neutrino was detected by the Kilometre Cube Neutrino Telescope and that it may have come from an exploding black hole. Can black holes explode, or do they just merge or collapse?

Hawking radiation provides a theoretical mechanism where very small black holes evaporate and can 'explode' in a runaway evaporation near the end of their life, but astrophysical, stellar-mass black holes take enormously longer than the age of the universe to do so, making such events extremely unlikely in practice.

White Dwarfs, Black Holes & Cosmic Oddities Unpacked | Q&A

Q: How far do you need to go before you stop feeling Earth's gravity when in orbit or on a long interplanetary trajectory?

Gravity never fully disappears; you feel it at any distance, but its influence weakens with distance and is eventually dominated by broader galactic or interstellar gravitational fields as you move farther away.

Angular Momentum, Cosmic Time Dilation & Dark Matter Mysteries Unraveled | Q&A

Q: Does the angular momentum of two spinning black holes cancel out if their spins are equal and opposite, leading to a non-spinning final black hole?

Yes, the two individual spins could cancel, but the majority of angular momentum comes from the orbital motion, and that orbital angular momentum is radiated away as gravitational waves, leaving the final black hole with negligible net spin in the special case where the spins are perfectly opposite and matched.

Audience Metrics

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Frequently Asked Questions About This Podcast

What is This Podcast about and what kind of topics does it cover?

This show blends accessible space science with lively banter, delivering news, explanations of complex phenomena, and listener questions. Episodes commonly cover black holes, planetary science, lunar mysteries, cosmic origins, and space exploration tech, often featuring expert guests or notable researchers who deepen context for curious listeners. A hallmark is clear, conversational explanations paired with entertaining anecdotes and a focus on real-world implications of recent discoveries. The format frequently rotates between newsy explainer editions and Q&A sessions, making it approachable for newcomers while still engaging for seasoned space enthusiasts. A standout trait is the lighthearted chemistry between hosts, plus thoughtful criti... more

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These podcasts share a similar audience with this podcast:

1. SpaceTime with Stuart Gary
2. Universe Today Podcast
3. The Supermassive Podcast
4. Ask a Spaceman!
5. The 365 Days of Astronomy

How many episodes of this podcast are there?

this podcast launched 10 years ago and published 742 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on this podcast?

Recent guests on this podcast include:

1. Andrea Tham
2. Martin Berman Gorvine
3. Sunny Skies
4. Martin Berman-Gorwein
5. Michelle Doherty
6. Heidi Campo
7. Doug Stone
8. Mark Rabelais

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