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The Supermassive Podcast - Podcast

The Supermassive Podcast

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.fm


And 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.

Science Astronomy Physics History
Update frequency
every 21 days
Average duration
36 minutes
Episodes
98
Years Active
2020 - 2025
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Supermassive Q and A...Live!

Supermassive Q and A...Live!

We are live at the National Astronomy Meeting in Durham with questions on everything from white holes and fuzzy stars, to solar storms and time travel. Science journalist Izzie Clarke is joined by Dr…

00:46:55  |   Tue 26 Aug 2025
BONUS - What Shape is Space?

BONUS - What Shape is Space?

Izzie Clarke is joined by Dr Robert Massey to tackle your questions on the shape of space, measuring gravitational waves and planet spotting. We also have another - another! - astronaut: Producer Ric…

00:19:27  |   Tue 12 Aug 2025
Astronauts. Do we need them?

Astronauts. Do we need them?

It’s a brave question to put to three astronauts live on stage but it’s a risk we are prepared to take. Recorded in front of a live audience at the UK Space Conference in Manchester, European Space A…

00:50:04  |   Tue 29 Jul 2025
BONUS - Where are Earth's rings?

BONUS - Where are Earth's rings?

What would happen if asteroid Bennu impacted Earth? Can we timelapse Saturn's rings developing? Where are Earth's rings? Plus the solar wind on Mars... The Supermassive team answer YOUR questions.


Ke…

00:12:50  |   Sat 19 Jul 2025
Why isn't Pluto a planet?

Why isn't Pluto a planet?

Izzie and Dr Becky decided that little ol’ Pluto doesn’t get much attention anymore. So we’re giving the dwarf planet some time in the spotlight. Why isn't Pluto a planet? How small is it? And what m…

00:50:42  |   Mon 30 Jun 2025
BONUS - Why aren’t stars closer together?

BONUS - Why aren’t stars closer together?

What would happen if planets collided at a snail's pace? How much of Avengers Endgame regarding time is scientifically acceptable? Why aren't stars closer together? And the team discuss a listener's …

00:17:40  |   Wed 11 Jun 2025
Is Time Real?

Is Time Real?

Start your stopwatches, set your timers, turn back your clocks because Izzie and Dr Becky are talking time. What is it? How, and why, do we measure it? And is time real or a human construct?!


Izzie sp…

00:57:02  |   Wed 28 May 2025
BONUS - Mole People on Mars

BONUS - Mole People on Mars

Should astronauts live underground on the Moon or Mars? Black hole jets, rogue planets, the big crunch (or freeze) and the Ontario question. Dr Becky, Izzie and Dr Robert Massey tackle your correspon…

00:16:06  |   Tue 13 May 2025
What is Gravity?

What is Gravity?

This episode is a weighty one. Some might say massive. It’s all about gravity. What is it? Why does it matter? Izzie and Dr Becky explore Einstein and Newton’s different ideas on the subject, plus Iz…

00:53:54  |   Thu 24 Apr 2025
BONUS - Can we gravitationally

BONUS - Can we gravitationally "hitch hike" out of the Solar System?

What the bloomin’ hell is a Gravastar? Are fast radio bursts like solar flares on steroids? Plus an interesting question on multiverses that can't be summed up in a short sentence. Izzie Clarke, Dr B…

00:15:01  |   Fri 11 Apr 2025
Returning to the Moon - with ESA Astronaut Matthias Maurer

Returning to the Moon - with ESA Astronaut Matthias Maurer

Climb aboard The Supermassive Rocket, Izzie and Becky are (talking about) sending humans back to the moon. Joining them on their trip is European Space Agency astronaut Matthias Maurer and Jacki Maha…

00:52:08  |   Mon 31 Mar 2025
BONUS - Can A Star Orbit Another Star?

BONUS - Can A Star Orbit Another Star?

If black holes are so dense, how can gamma rays jet shoot out from it? At what point in space does our sun become invisible to the naked eye? And a question about CubeSats, black holes and detecting …

00:12:03  |   Wed 12 Mar 2025
Sample Return Missions - What Could Possibly Go Wrong?

Sample Return Missions - What Could Possibly Go Wrong?

This time Dr Becky Smethurst and Izzie Clarke discover why it’s touch and go when it comes to returning asteroid samples to Earth and hear how we’ve been exchanging spit with Mars since the dawn of t…

00:46:40  |   Fri 28 Feb 2025
EMERGENCY BONUS - Asteroid 2024 YR4

EMERGENCY BONUS - Asteroid 2024 YR4

Scientists have detected an asteroid that has a small chance of hitting Earth. Resident expert Dr Robert Massey tells Izzie Clarke and Richard Hollingham why we shouldn't be worried.


Want to suggest a…

00:13:09  |   Wed 19 Feb 2025
BONUS - Could we capture a primordial black hole?

BONUS - Could we capture a primordial black hole?

What are the implications on space exploration with a change of president? Did cosmic inflation come before the Big Bang? Are there sonic booms in space? Izzie, Becky and Robert take on your question…
00:16:34  |   Wed 12 Feb 2025
The Search for Space Aliens

The Search for Space Aliens

Hosts Izzie Clarke and Dr Becky Smethurst are starting 2025 with a biggie. The scientific search for extraterrestrial life: 

Where are scientists looking? How do they search for potential signals? And…
00:55:21  |   Wed 29 Jan 2025
Q&A - Space Potatoes and Christmas Stars

Q&A - Space Potatoes and Christmas Stars

Our final episode of 2024 is a SUPERMASSIVE Q&A. 

Izzie Clarke, Dr Becky Smethurst and Dr Robert Massey make their way through your questions.  What’s the farthest star we can see with the naked eye? …
00:53:30  |   Sat 21 Dec 2024
BONUS - Why can't anything go faster than the speed of light?

BONUS - Why can't anything go faster than the speed of light?

From planetary alignment through the galaxy to spacetime expansion, The Supermassive Team answer your questions.

Keep sending us your questions, email us on [email protected] or find us on instagram
00:14:11  |   Fri 13 Dec 2024
The Mystery of Fast Radio Bursts

The Mystery of Fast Radio Bursts

The Supermassive Team are investigating strange blasts of energy in space called Fast Radio Bursts. What are they and where do they come from? Dr Stuart Ryder from Macquarie University in Australia j…
00:40:41  |   Thu 05 Dec 2024
BONUS - Nuclear Pasta & G-Astronomy

BONUS - Nuclear Pasta & G-Astronomy

... Potentially the silliest bonus episode we've ever recorded. 

The Supermassive Team takes on your questions; What are Brown Dwarfs? How can photons have different energies? Do frozen stars exist? A…
00:17:42  |   Tue 19 Nov 2024
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