AaS! 276: What Would Happen if the Sun…Stopped?
What really keeps the Sun shining? How long would it stay warm if fusion stopped? How long would it take before we noticed? I discuss these...
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Science & Medicine
Ask a Spaceman!
What would happen if you fell into a black hole? How big is the universe? Just what the heck is a quasar, anyway? You've got questions, and astrophysicist Paul Sutter has the answers! Submit...
Ask a Spaceman! Podcast Guide
Listen to Ask a Spaceman!, a Science & Medicine podcast by Paul M. Sutter. Stream 282 episodes in English, follow new audio stories, and play episodes online on Radio and Podcast.
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AaS! 275: Why Can't the Universe Be Cyclic?
What are the weaknesses of inflation theory? How did the ekpyrotic theory attempt to improve it? How did it open up its own can of worms? I...
AaS! 274: Is Dust the Best Thing in the Universe?
Why is dust so annoying? But where does it come from, and what can it do? And is dust responsible for the creation of life? I discuss these...
AaS! 273: What if the Universe Had No Beginning?
What does is mean for the universe to have a wave function? How does Hawking's "no boundary" proposal mean that the universe comes from itse...
AaS! 272: Are Neutrinos Their Own Evil Twins?
What does "antimatter" actually mean? Can a particle be its own opposite? What would happen to it, and what does this have to do with a miss...
AaS! 271: What Happens When Light Goes Boom?
How can matter ever go faster than light? What happens when it does? Who discovered this, and what is it good for? I discuss these questions...
AaS! 270: Is the Universe…Defective?
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?...
AaS! 269: Why Are Interstellar Objects So Weird?
What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where...
AaS! 268: What are Little Red Dots?
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...
AaS! 267: Is the Universe Older than We Think?
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...
AaS! 266: Is the Universe Made of Math?
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 m...
AaS! 265: Does Antimatter Fall Up?
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 t...
AaS! 264: Just How Weird is the Quantum Eraser?
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...
AaS! 263: Does Free Will Exist?
What is causal determinism? What are some of the ways that physics can permit free will? What does emergence have to do with all of this? I...
AaS! 262: Does the Universe Have Extra Dimensions?
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 w...
AaS! 261: What are Black Dwarfs?
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...
AaS! 260: What's the Big Deal with the Weak Force?
How did we discover the weak nuclear force? Why is it so strange compared to the other forces? What do mirrors have to do with all of this?...
AaS! 259: Where Exactly is the Edge of the Universe?
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...
AaS! 258: What's Going to Happen After the ISS?
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...
AaS! 257: How Does One Go About Smashing Particles?
How do particle colliders work? What kinds of energies are we talking about? Are there any uses for colliders except for physics experiments...