
Show overview
The Supermassive Podcast has been publishing since 2020, and across the 6 years since has built a catalogue of 122 episodes, alongside 27 trailers or bonus episodes. That works out to roughly 75 hours of audio in total. Releases follow a monthly cadence.
Episodes typically run thirty-five to sixty minutes — most land between 20 min and 48 min — though episode length varies meaningfully from one episode to the next. None of the episodes are flagged explicit by the publisher. It is catalogued as a EN-language Science show.
The show is actively publishing — the most recent episode landed 2 weeks ago, with 16 episodes already out so far this year. Published by Izzie Clarke.
From the publisher
The UK's #1 space podcast.Science journalist Izzie Clarke and astrophysicist Dr Becky Smethurst whizz through the universe to explore the latest research with leading experts, dive to history from the society’s archives and take on your weird and wonderful questions about all things space. Can we gravitationally hitch-hike out of the solar system? Do we live in a multiverse? What is time? Plus Dr Robert Massey is on hand with his top star-gazing tips.Want to support the show? Join The Supermassive Club for exclusive content, star-gazing forums and ad-free listening... supermassive.supportingcast.fmAnd keep adding to The Supermassive Mailbox with your pictures and questions for the team. Send them to [email protected] or follow them on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production for the Royal Astronomical Society. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.
Latest Episodes
View all 122 episodesThe Kuiper Belt...Revisited
Colanders and is space a stew?
Top Tips To See The Eclipse
Q&A: Could Dark Matter Be Space Vampires?
Can Time Travel be sped up? What is the Bootes Void? And G'day to Australians
What the heck are neutrinos?
Why Is There Motion in the Universe?
Will the Next Space Telescopes Unravel Current Physics?
Did Gravity Wipe Out The Dinosaurs?
Into the Space Debris Swamp
Our Artemis II Debrief

When Space Goes Rogue....
The Supermassive Team are going rogue (more so that usual!) This time, it’s all about the non-conforming objects in space. Black holes, planets and the other rogue objects Izzie and Dr Becky can think of... Plus, Dr Robert Massey takes on your questions and shares his stargazing tips for April. A big thank you to Gavin Coleman from Queen Mary's University, and Astronomy Now magazine editor and owner, Stuart Clark. For more accessible astronomy, the recommend you read their brilliant articles on astronomynow.com. Join The Supermassive Club for ad-free listening, forum access, and extra content from the team. And email your questions to [email protected] or follow us on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

Black holes in the lab and meeting Ryan Gosling
It’s a massive bonus episode this month with both listener questions and an extended interview with the producer/directors of the new Ryan Gosling film: Project Hail Mary. Dr Becky and Dr Robert are joined by editor Richard to tackle questions on creating a black hole in the lab, how long a planet lasts and the size of the biggest black hole. Guest reporter, Sue Nelson, chats to Phil Lord and Chris Miller about Project Hail Mary and Becky reveals what she chatted about with Ryan Gosling. Join The Supermassive Club for ad-free listening, forum access, and extra content from the team. And email your questions to [email protected] or follow us on Instagram, @SupermassivePod. The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

What is the Hubble Tension?
There's a crisis in cosmology when it comes to understanding a little thing like the acceleration of our universe, aka The Hubble Tension. And in this episode, Izzie Clarke and Dr Becky Smethurst are digging into what this is and (trying to) explain the science behind it. A huge thank you to our guests, (Nobel Prize winning-) Professor Adam Riess from John Hopkins University and Professor Silvia Galli from Institut d'Astrophysique de Paris. Join The Supermassive Club for ad-free listening, forum access, and extra content from the team. And email your questions to [email protected] or follow us on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

2026: The year in space... And at sea?!
What are the biggest space missions of 2026? And what are the best stargazing opportunities this year? The Supermassive Team - Izzie Clarke, Dr Becky Smethurst, Dr Robert Massey and Richard Hollingham - share their astronomical excitement for the year ahead and ponder if they should charter a boat for the August eclipse.Thank you to listeners Anne Edgeworth and Karolina who inspired this episode.To support the show, join The Supermassive Club for ad-free listening, forum access, and extra content from the team. If you have a question for the team - or have a boat we can borrow! - get in touch via [email protected] or on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

Q&A: Meteors, Artemis II, and Space Bathtubs
The Supermassive Podcast is back for 2026, and we've got a MEGA Q&A. What happens when two nebulae collide? Where did Neptune and Uranus form? What’s the procedure for a medical emergency on the ISS? And more. Plus, Izzie, Dr Becky, Robert and Richard cover everything you need to know ahead of the launch of Artemis II. And here are the links to things we promised you in this episode... Our episode "How to Time Travel"Our episode "Do We Live in a Multiverse?"Richard's brilliant Space Boffins podcastJoin The Supermassive Club for ad-free listening, forum access, and extra content from the team. And email your questions to [email protected] or follow us on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

How to Time Travel
Fire up your flux capacitor and dematerialise your Tardis because The Supermassive Podcast is traveling in time. Is it possible? How does it work? And, crucially, which films got the physics right (or wrong!)? Thank you to Dr Emma Osborne from the University of York, and Dr Alfredo Carpinetti from IFLScience for their help on this episode. Alfredo's upcoming book, Invisible Rainbows, will be available for pre-order soon. Here's the Time Travel in Fiction Rundown from Minute PhysicsJoin The Supermassive Club for ad-free listening, forum access, and extra content from the team. And email your questions to [email protected] or follow us on Instagram, @SupermassivePod. The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

BONUS - Slingshots, Christmas Presents & Alien Communication
What would it be like to feel gravitational waves? How are satellites protected from extreme solar storms? How do gravity slingshots work? Are aliens potentially communicating outside of the electromagnetic spectrum? Plus Izzie, Dr Becky and Robert share their annual Christmas present recommendations.Keep sending your questions to [email protected], Instagram @SupermassivePod or members can post on The Supermassive Club's forum. Join The Supermassive Club for ad-free listening, forum access, and extra content from the team. The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham.The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

Protecting Our Dark Skies
What are the threats to our dark night skies? And what needs to be done to protect them? Izzie, Dr Becky and Robert explore this important topic and head outside (...and the weather was not on their side!) Thank you to Dr Samantha Lawler at the University of Regina in Saskatchewan and Andy Lawrence, the Regis professor of astronomy at the University of Edinburgh. Don't forget to join The Supermassive Club for ad-free listening, forum access, and extra content from the team. The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

BONUS - Supermassive Gone Rogue
Can JWST detect exomoons? How can black holes keep absorbing more mass? How big is our cosmic neighbourhood? And what is a rogue black hole?! Izzie, Dr Becky and Robert answer YOUR questions. You can add to The Supermassive Mailbox by emailing [email protected] or messaging us on instagram @SupermassivePod. To support the show join The Supermassive Club and access ad-free listening, forum discussions, and member's only content. Hosted on Acast. See acast.com/privacy for more information.