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Ask a Spaceman!

Paul M. Sutter
Nuclear Fusion
Science
Trust In Science
ITER
National Ignition Facility
Quantum Mechanics
Funding For Science
Public Perception
Dark Matter
Nuclear Energy
Education In Sciences
Electromagnetism
Underrepresented Groups In Science
Climate Change Research
Genetically Modified Food
Clean Energy
Big Rip
Cosmological Constant
Accelerated Expansion
Quantum Field

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 monthlyEpisodes274Founded11 years ago
Number of ListenersCategories
ScienceNatural SciencesAstronomy

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Artwork for Ask a Spaceman!

Latest Episodes

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

Why is math so effective at describing the universe? What is reality is made of math? What does it mean for us to be conscious beings in a mathematical structure? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http:... more

What is the weak equivalency principle? How was antimatter discovered and why is it the perfect thing to put gravity to the test? What did the CERN experiment discover? I discuss these questions and more in today's Ask a Spaceman!

Support the show:... more

Key Facts

Accepts Sponsors
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Number of Listeners
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Similar Podcasts

People also subscribe to these shows.

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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
  • An all time favorite series

    Making physics fun a relatable for the curious non-physicist

    Apple Podcasts
    5
    743Rob
    United States4 months ago
  • Great Podcast!

    I look forward to every new episode.

    Apple Podcasts
    5
    Casti 7
    United States5 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 Kingdom6 months ago
  • Truly informative!

    Took me years to begin listening to podcasts, and it makes me sad that I was missing amazing shows like this one! Paul explains things in such simple terms. Very enjoyable.

    Apple Podcasts
    5
    coolfactor
    Canada6 months ago
  • Why can’t I listen anymore?

    I absolutely loved Paul’s AAS podcast but I now get an error message saying I can’t play the episode on my device (iPhone 12). Why?

    Apple Podcasts
    5
    Tony Bartuccio
    Australia7 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

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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. Universe Today Podcast
2. SpaceTime with Stuart Gary
3. The Supermassive Podcast
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 274 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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