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Ask a Spaceman!

von Paul M. Sutter

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

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  1. AaS! 283: What's Really Going on with UAPs?

    What are UFOs? What are the chances that aliens have visited the Earth? Why should we bother talking about it? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: htt

  2. AaS! 282: What Happens When You Shine a Light on Nothing?

    How does the vacuum interact with light? Is it possible to use light to create something from nothing? And is "birefringence" a real word? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.co

  3. AaS! 281: What Makes the Scattered Disk So Wild?

    How did the scattered disk of the solar system form? What kins of strange objects roam those badlands? And what does it do to the rest of the solar system? I discuss these questions and more in today's Ask a Spaceman! Support the show: http

  4. AaS! 280: Wait So We Can Steal Energy from Black Holes?

    What is frame dragging? How do we measure it? And how can we turn this into a method for extracting energy from rotating black holes? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pms

  5. AaS! 279: What Can We Actually Find on an Exoplanet?

    Just how hard are exoplanets observations? What kind of telescope will it take to find life? And how much information can we get out of a single pixel of light? I discuss these questions and more in today's Ask a Spaceman! Support the show:

  6. AaS! 278: What's A Good Story About Chandrasekhar?

    What was the big deal about Chandrasekhar's discovery? Why did he meet so much resistance? How is his work tied to everything from supernovae to black holes? I discuss these questions and more in today's Ask a Spaceman! Support the show: ht

  7. AaS! 277: What's It Like to Travel Near the Speed of Light?

    What does high-speed motion through the universe do to your perspective? What is the Rindler horizon, and how does it appear? Would you get vaporized by a high-energy bath of radiation? I discuss these questions and more in today's Ask a Sp

  8. 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 questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All

  9. 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 discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com

  10. 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 questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All

  11. 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 itself? And is it really the final answer? I discuss these questions and more in today's Ask a Spaceman!

  12. 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 missing scientist? I discuss these questions and more in today's Ask a Spaceman! Support the show: http:

  13. 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 and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes:

  14. 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? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.c

  15. 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 do they come from? I discuss these questions and more in today's Ask a Spaceman! Support the show:

  16. 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 they teaching us about the early universe? I discuss these questions and more in today's Ask a Spac

  17. 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 extra lumpy, does that change anything? I discuss these questions and more in today's Ask a Spaceman

  18. 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 mathematical structure? I discuss these questions and more in today's Ask a Spaceman! Support the sho

  19. 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 the CERN experiment discover? I discuss these questions and more in today's Ask a Spaceman! Support t

  20. 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's already started? How does quantum complementarity guide us with how to think about it? I discuss

  21. 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 discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com

  22. 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 we can't perceive them? I discuss these questions and more in today's Ask a Spaceman! Support the sho

  23. 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 happen to them someday? I discuss these questions and more in today's Ask a Spaceman! Support the sh

  24. 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? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.c

  25. 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? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon

  26. 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 down, and why? And what's coming up next? I discuss these questions and more in today's Ask a Space

  27. 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? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon

  28. AaS! 256: What Can Gravitational Waves Teach Us About the Big Bang?

    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.

  29. AaS! 255: How Do the Biggest Stars Get So Big?

    How do we measure the sizes of stars? What are the biggest ones today, and how big could stars have gotten in the past? Is there any way for a star to cheat and get even bigger? I discuss these questions and more in today's Ask a Spaceman!

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

    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.patr

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