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Ask a Spaceman!

Paul M. Sutter
Quantum Mechanics
Dark Matter
Dark Energy
Nuclear Fusion
Cosmic Microwave Background
Astronomy
Science
Black Holes
Big Bang
Cosmology
Electromagnetism
Neutron Stars
Milky Way
ITER
National Ignition Facility
Trust In Science
Astrophysics
Mathematical Universe Hypothesis
Physics
Gravity

You've got questions and astrophysicist Paul M. Sutter has answers - every episode you will come closer to complete knowledge of time and space!

PublishesTwice monthlyEpisodes276Founded11 years ago
Number of ListenersCategories
AstronomyNatural SciencesScience

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Artwork for Ask a Spaceman!

Latest Episodes

What did the universe do to make so many defects? What happens when they get trapped? And could they be hiding right in front of our noses? I discuss these questions and more in today's Ask a Spaceman!

Support the show: www.patreon.com/pmsut... more

What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from? I discuss these questions and more in today's Ask a Spaceman!

Support the show: w... more

What do we find when we push the James Webb Space Telescope to its limits? Are Little Red Dots newborn galaxies or old black holes? What are they teaching us about the early universe? I discuss these questions and more in today's Ask a Spaceman!

Su... more

How can anyone agree on the age of the universe? And how can we be so confident if it's all just a bunch of models? What if the universe is extra lumpy, does that change anything? I discuss these questions and more in today's Ask a Spaceman!

Suppor... more

Key Facts

Accepts Sponsors
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Podcast Host
Number of Listeners
Find out how many people listen to this podcast per episode and each month.

Similar Podcasts

People also subscribe to these shows.

The Supermassive Podcast
The Supermassive PodcastThe Royal Astronomical Society
Space Nuts: Astronomy Insights & Cosmic Discoveries
Space Nuts: Astronomy Insights & Cosmic DiscoveriesProfessor Fred Watson and Andrew Dunkley
The 365 Days of Astronomy
The 365 Days of Astronomy365DaysOfAstronomy.org

Recent Guests

Kyle S
Question asker that led to the episode
Episode: AaS! 268: What are Little Red Dots?

Host

Paul M. Sutter
Astrophysicist and science communicator, host of the show; known for explaining complex cosmology and physics topics in approachable terms.

Reviews

4.8 out of 5 stars from 1.8k ratings
  • Used to be good

    This used to be a good podcast. Now they are short and have lots of commercials. He still manages to ask for Patreon contributions though

    Apple Podcasts
    3
    Utmost Tartan
    United States2 months ago
  • One of the best

    What can I say that has not been said before this podcast is amazing the host is very entertaining and knowledgeable and the topics are very interesting the best podcast ever

    Apple Podcasts
    5
    @the animator
    United States2 months ago
  • An all time favorite series

    Making physics fun a relatable for the curious non-physicist

    Apple Podcasts
    5
    743Rob
    United States6 months ago
  • Great Podcast!

    I look forward to every new episode.

    Apple Podcasts
    5
    Casti 7
    United States6 months ago
  • Just the best podcast, shame it doesn’t come out more often!

    Fantastic high quality podcast covering all things space and physics. Love how some elements are in depth and go deeper into a subject. Just wish there would be more episodes! Thank you for your constant work on this.

    Apple Podcasts
    5
    Ogbuyana
    United Kingdom7 months ago

Listeners Say

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

Clear, informative, and well-structured episodes that balance rigor with accessibility.
Excellent explainer of complex topics with engaging delivery.
Satisfying mix of cosmology, particle physics, and space exploration discussions.
Audience-friendly depth and accessible science storytelling.
Consistently high-quality, enthusiastic host who makes physics engaging.

Chart Rankings

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

Talking Points

Recent interactions between the hosts and their guests.

AaS! 261: What are Black Dwarfs?
Q: How long does it take for a white dwarf to cool into a black dwarf?
It takes approximately 10 trillion years for a white dwarf to cool sufficiently to become a black dwarf.
AaS! 261: What are Black Dwarfs?
Q: What happens to a white dwarf over time?
A white dwarf cools down over trillions of years and transforms into a black dwarf, eventually becoming nearly invisible and ceasing to emit visible light.
AaS! 214: Is Empty Space Really...Empty?
Q: Is space really empty?
To determine if space is empty, we need to define what we mean by 'space' and consider that even in the deeper voids of the universe, there's still energy and other entities present.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
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Frequently Asked Questions About Ask a Spaceman!

What is Ask a Spaceman! about and what kind of topics does it cover?

A scientifically focused show where the host, an astrophysicist, explains astronomy, cosmology, and fundamental physics in clear, accessible terms. Episodes typically explore big questions about the universe—from the age of the cosmos and the meaning of dark matter to quantum phenomena and the nature of space time—often weaving in historical context, thought experiments, and practical implications. The host's engaging delivery, rigorous yet approachable explanations, and willingness to tackle both classic concepts and cutting-edge ideas tend to attract curious listeners who want depth without jargon. The format often includes thoughtful analogies, occasional humor, and a nod to audience support mechanisms that sustain the show. This combina... more

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Which podcasts are similar to Ask a Spaceman!?

These podcasts share a similar audience with Ask a Spaceman!:

1. The Supermassive Podcast
2. Universe Today Podcast
3. SpaceTime with Stuart Gary
4. Space Nuts: Astronomy Insights & Cosmic Discoveries
5. The 365 Days of Astronomy

How many episodes of Ask a Spaceman! are there?

Ask a Spaceman! launched 11 years ago and published 276 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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Recent guests on Ask a Spaceman! include:

1. Kyle S

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