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PODCAST

Ask a Spaceman!

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

science natural sciences

All Episodes

27:35

AaS! 265: Does Antimatter Fall Up?

Ask a Spaceman! ·

2026/02/03

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: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and

en

29:36

AaS! 264: Just How Weird is the Quantum Eraser?

Ask a Spaceman! ·

2026/01/20

How does the double-slit experiment work? What does it teach us about reality and measurement if we try to mess with the experiment after it's already started? How does quantum complementarity guide us with how to think about it? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions

en

32:57

AaS! 262: Does the Universe Have Extra Dimensions?

Ask a Spaceman! ·

2025/12/16

What do extra dimensions have to do with the strength of gravity? What is a tower of gravitons? How can we detect extra dimensions even if we can't perceive them? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology

en

36:31

AaS! 261: What are Black Dwarfs?

Ask a Spaceman! ·

2025/12/02

What happens to a white dwarf when it cools off? How long does it take? Do they just stay black forever, or will something more interesting happen to them someday? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and

en

23:26

AaS! 259: Where Exactly is the Edge of the Universe?

Ask a Spaceman! ·

2025/11/04

Is the universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to

en

32:31

AaS! 258: What's Going to Happen After the ISS?

Ask a Spaceman! ·

2025/10/21

Why did we develop the International Space Station in the first place? What have we learned in its 25+ years of operation? When is it coming down, and why? And what's coming up next? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics,

en

34:13

AaS! 256: What Can Gravitational Waves Teach Us About...

Ask a Spaceman! ·

2025/09/23

What are some sources of gravitational waves that aren’t black holes? How did inflation create gravitational waves? How can we possibly detect them? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to

en

25:18

AaS! 254: How Do Variable Stars, You Know, Vary?

Ask a Spaceman! ·

2025/08/19

What powers Cepheid variable stars? What about Mira variables and pulsating stars? And are there variable stars that don’t actually vary at all? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to

en

34:19

AaS! 252: Why Can’t We Get Free Energy from the Vacuum?

Ask a Spaceman! ·

2025/07/22

Why does the vacuum of spacetime have energy? How much energy does it have? What prevents us from using it to do anything useful? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE

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36:11

AaS! 249: Where Do the Constants of Nature Come From?...

Ask a Spaceman! ·

2025/06/03

Part 1 of 2! How do fundamental constants appear in physics? Why are they so important? Why do we care where they come from? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE

en

32:57

AaS! 248: What’s Going on Inside Neutron Stars?

Ask a Spaceman! ·

2025/05/20

What’s inside a neutron star? What strange states of matter do we encounter? And what mysteries will we find deep in the core? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE

en

28:17

AaS! 244: What’s the Most Important Wavelength in All...

Ask a Spaceman! ·

2025/03/18

What is 21-cm radiation? What (and who) produces it? What causes it, and what does it tell us about the universe? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Follow on X: https://x.com/PaulMattSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND

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31:55

AaS! 243: So Is the Warp Drive Legit or Not?

Ask a Spaceman! ·

2025/03/04

What is an Alcubierre warp drive? What would it take to make it work? Could it propel spacecraft even below the speed of light? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Follow on X: https://x.com/PaulMattSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE

en

35:50

AaS! 242: Are There Invisible Stars in the Universe?

Ask a Spaceman! ·

2025/02/18

What is an axion? How could axions make a star, and what does that have to do with dark matter? What would these stars look like? I discuss these questions and more in today’s Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Follow on X: https://x.com/PaulMattSutter Read a book: http://www.pmsutter/book Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE

en

31:28

AaS! 237: Could Any Supernova Harm the Earth?

Ask a Spaceman! ·

2024/12/03

Are we “in range” of any potential supernovae? Has the Earth ever been hit in the past? And what about gamma-ray bursts from across the galaxy, are we safe from those? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes:

en

38:26

AaS! 235: Is it Time to Redefine the Planet?

Ask a Spaceman! ·

2024/11/05

How did Pluto get demoted? What makes a planet a planet anyway? Why do we now have so many different kinds of planets, and should we make things simpler? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com

en

34:07

AaS! 233: Why Do We Care About Methane on Mars?

Ask a Spaceman! ·

2024/10/01

What’s behind the Martian Methane Mystery? Is it a sign of life, or just some strange chemical process? Or are we just fooling ourselves? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Follow on Twitter:

en

33:30

AaS! 232: Is Space Tourism a Good Idea?

Ask a Spaceman! ·

2024/09/17

Why are private space companies pushing tourism? Is there a future for tourism in space? Is this an overall good thing for space exploration, or just a distraction? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes:

en

36:11

AaS! 229: Is the James Webb Breaking Cosmology?

Ask a Spaceman! ·

2024/08/06

What has the James Webb Space Telescope learned so far? Is it finding galaxies that “break” cosmology? What will we learn next? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Follow on Twitter:

en

42:18

AaS! 225: What is the Cosmic Flaw That Shouldn’t Exist?

Ask a Spaceman! ·

2024/06/04

What is the “cold spot” on the cosmic microwave background? Why shouldn’t it exist? What are some possible explanations for it, and why are they unsatisfying? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com

en

248 results

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