Universe Today Podcast

Fraser Cain

NASA

Mars

James Webb Space Telescope

Black Holes

Vera Rubin Observatory

Moon

Astronomy

Dark Matter

Spacex

Exoplanets

Artificial Intelligence

3I Atlas

Space Exploration

Europa

Comet 3i Atlas

Earth

Supernova

China

Jupiter

Starship

Public feed with [Space Bites+], [Q&A+], [Interview+] and other episodes. Free for everyone.

1.6k ratings

Publishes	Daily	Episodes	1580	Founded	13 years ago
Number of Listeners		Categories	AstronomyScience

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Latest Episodes

[Interview+] Resolving The Largest Black Hole In the Universe

🟣 Guest: Jeff Nosanov orbitalvelocity.space/

🎙️ Space Madness Podcast orbitalvelocity.space/#podcast

📚 How to do Business with NASA: A Practical Guide for Entrepreneurs, Innovators, and Contractors a.co/d/062c8pxQ

📜 ... more

29 Jul 2026 • 50 min

[Q&A+] Why Is The Universe Not 13.8B Light-Years Wide? | Q&A 444

BONUS QUESTION STARTS AT 13:58

Watch the video here (with no ads) or on YouTube: youtu.be/HeBEGMNq5OQ

Why is the Universe not 13.8 Billion light-years wide? Could a black hole possibly consume the entire Universe? Where did all the metals c... more

29 Jul 2026 • 19 min

[Space Bites+] An Asteroid Surprised Astronomers // Limits of Relativity // Milky Way Disk Flipped

BONUS STORY STARTS AT 14:16

Watch here (with no ads) or on YouTube: youtu.be/rnRYLtv9bjs

Bad news for the planets of Bernard Starr. Measuring the atmosphere on a rocky world within the habitable zone. Identifying the asteroid that killed th... more

24 Jul 2026 • 20 min • Popular

YouTube

[Q&A+] Could We Detect Other Universes?

BONUS QUESTION STARTS AT 11:05

Watch the video here (with no ads) or on YouTube: youtu.be/HhfRcjS6HUI

If other Universes exist, is it even possible to detect them? What created the fields and quantum fluctuations that supposedly set off the... more

23 Jul 2026 • 18 min • Most popular

YouTube

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Similar Podcasts

People also subscribe to these shows.

Astronomy CastFraser Cain and Dr. Pamela Gay

SpaceTime with Stuart GaryStuart Gary

Space Nuts: Astronomy Insights & Cosmic DiscoveriesProfessor Fred Watson and Andrew Dunkley

The Supermassive PodcastThe Royal Astronomical Society

Ask a Spaceman!Paul M. Sutter

Recent Guests

Roy Kilgard

Professor of the practice in astronomy at Wesleyan University

Wesleyan University

Episode: [Interview+] Supernova Remnants Should Fade Away. So, Why are Some Flashing?

Zach Dicasse-Mansour

Guest discussing space futures and technology

Episode: [Q&A+] What Would It Cost to Keep The ISS Up?

Aaron Rosengren

Associate Professor at the University of California, San Diego

UC San Diego

Episode: [Interview+] Getting to the Moon Is Much More Complex Than You Think

Paul Michael Friedman

Space journalist featured as a guest in the Q&A

Episode: [Q&A+] Will Earth's Iron Poison The Sun?

Amy Dwyer

Guest discussing JWST observations and related topics

Episode: [Q&A+] Will Earth's Iron Poison The Sun?

Matt Williams

Contributor reporting on planetary science and planetary interiors

Universe Today

Episode: [Space Bites+] Rubin's 10-Year Survey // Perseverance Clone for the Moon // Super-Puff Planets

Evan Goff

Space journalist providing background on Vera Rubin Observatory and related stories

Universe Today

Episode: [Space Bites+] Rubin's 10-Year Survey // Perseverance Clone for the Moon // Super-Puff Planets

Lawrence Tugnevy

Contributor providing weekly space news votes and summaries

Universe Today YouTube channel

Episode: [Space Bites+] Rubin's 10-Year Survey // Perseverance Clone for the Moon // Super-Puff Planets

Tor Blomqvist

Agronomist and PhD candidate at the German Aerospace Center

German Aerospace Center

Episode: [Interview+] What Will We Eat in Space?

Reviews

4.8 out of 5 stars from 1.6k ratings

Mick West??
I was a regular listener until the episode where the host lauds Mick West, who is no more qualified to analyze video than you or I.
Apple Podcasts
1
4sd..o
United States3 months ago
Manned Missions are such a waste
I am finding the bias of this show tilted so far to manned missions to the moon, mars, and space that it is hard to keep listening to.
IMO this pursuit is such a waste of time and resources and adds very little to man’s knowledge and understanding of the universe that cannot be obtained by much less costly unmanned missions.
It is such an ego trip brought to you by the Billionaires Ego Industrial Complex.
I wish you would address this issue.
Apple Podcasts
3
jmdarri
United States3 months ago
for space and science enthusiasts
As an amateur learning skywatching through a telescope: I started about 20years ago reading www.universetoday.com which introduced me to Universe today. When I discovered Fraser Cain doing youtube interviews with Astronomers and other scientists, I became hooked. Now the website, newsletter and shows are updated often and regularly. But I found that I mostly enjoyed listening to it. Thats where these Apple podcasts and google podcasts come in really handy. Thank-you Fraser and the team at univer... more
Apple Podcasts
5
Sabwap
New Zealand4 months ago
Excellent
Best science pod, period. No fluff. I never miss it.
Apple Podcasts
5
Beldar88
United States5 months ago
Love this
I love space and rockets so this is perfect
Apple Podcasts
5
Spaccemay
United States5 months ago

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Listeners Say

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

Engaging mix of short updates and deep dives keeps science accessible.

Listeners appreciate community involvement and Patreon support as part of the show's ecosystem.

Guests are credible, with a strong emphasis on expert perspectives.

The show consistently delivers clear explanations without jargon, which helps broad audiences grasp complex topics.

Chart Rankings

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

Apple Podcasts	#1	United States/Science/Astronomy
Apple Podcasts	#43	United States/Science
Apple Podcasts	#1	Canada/Science/Astronomy
Apple Podcasts	#5	United Kingdom/Science/Astronomy
Apple Podcasts	#28	Canada/Science
Apple Podcasts	#99	United Kingdom/Science

Talking Points

Recent interactions between the hosts and their guests.

[Q&A+] What Would It Cost to Keep The ISS Up?

Q: Why not push the International Space Station into a higher orbit instead of de-orbiting it when it gets retired?

The primary constraint is money; NASA's budget and national priorities are not aligned with the billions required to continually raise the ISS, maintain its life support and systems, and manage new modules. Without sustained funding, there is no practical way to keep the ISS alive in orbit, so the fallback is de-orbit and eventual disposal, even though it would be technically possible to maintain or upgrade parts if resources were available.

[Q&A+] Could We Detect Other Universes?

Q: What created the fields and quantum fluctuations that supposedly set off the Big Bang?

There is no confirmed answer; current cosmology acknowledges gaps, with scientists describing the origin as possibly unknowable or awaiting a deeper theory that unifies gravity with quantum mechanics.

[Q&A+] Could We Detect Other Universes?

Q: If there was one or more universes beyond ours, would we be able to see them?

In principle, certain observational hints like collisions or overlaps could reveal others, but many theories predict that evidence would be indirect or beyond current observational capabilities, so a definitive view remains elusive.

[Interview+] Supernova Remnants Should Fade Away. So, Why are Some Flashing?

Q: What did you find?

The team identified several X-ray sources in M83 that behaved as variable supernova remnants, showing significant brightness changes on timescales from hours to years, which is unusual compared to the familiar, slowly fading remnants.

[Q&A+] What's The First Step for Mars True Colonization?

Q: Perry, if we could put a one Tesla magnetic dipole on Mars at L1 to encompass Mars in a magnetotail, wouldn't that be a good precursor to eventual colonization?

The idea could protect Mars from solar wind and help atmospheric thickening, potentially aiding habitability, but it would be an enormous, currently unfeasible megaproject and would not by itself solve radiation exposure from cosmic rays.

Audience Metrics

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Frequently Asked Questions About Universe Today Podcast

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

A science-focused, accessible space-news and Q&A show featuring lively discussions on astronomy, planetary science, and cutting-edge telescope projects. Episodes mix technical explainers with audience questions, live patron shout-outs, and occasional deep dives into missions, observatories, and data from major space programs. The format regularly brings in space writers, scientists, and engineers to provide clarity on complex topics, making it appealing to curious, educated listeners who want timely updates and practical context for big space questions. Notable strengths include a broad roster of expert guests, a transparent community-driven angle (Patreon support and audience Q&As), and a consistent emphasis on making advanced astronomy ap... more

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How many listeners does Universe Today Podcast get?

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Which podcasts are similar to Universe Today Podcast?

These podcasts share a similar audience with Universe Today Podcast:

1. Astronomy Cast
2. SpaceTime with Stuart Gary
3. Space Nuts: Astronomy Insights & Cosmic Discoveries
4. The Supermassive Podcast
5. Ask a Spaceman!

How many episodes of Universe Today Podcast are there?

Universe Today Podcast launched 13 years ago and published 1580 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Universe Today Podcast?

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What guests have appeared on Universe Today Podcast?

Recent guests on Universe Today Podcast include:

1. Roy Kilgard
2. Zach Dicasse-Mansour
3. Aaron Rosengren
4. Paul Michael Friedman
5. Amy Dwyer
6. Matt Williams
7. Evan Goff
8. Lawrence Tugnevy

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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