Ask a Spaceman!
By: Paul M. Sutter
Language: en
Categories: Science, Natural, Astronomy
You've got questions and astrophysicist Paul M. Sutter has answers - every episode you will come closer to complete knowledge of time and space!
Episodes
AaS! 263: Does Free Will Exist?
Jan 06, 2026What 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!
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<... Duration: 00:30:12AaS! 262: Does the Universe Have Extra Dimensions?
Dec 16, 2025What 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!
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Duration: 00:32:57AaS! 261: What are Black Dwarfs?
Dec 02, 2025What 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!
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Duration: 00:36:31AaS! 260: What's the Big Deal with the Weak Force?
Nov 18, 2025How 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!
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Duration: 00:31:08AaS! 259: Where Exactly is the Edge of the Universe?
Nov 04, 2025Is 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!
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...
Duration: 00:23:26AaS! 258: What's Going to Happen After the ISS?
Oct 21, 2025Why 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!
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Duration: 00:32:31AaS! 257: How Does One Go About Smashing Particles?
Oct 07, 2025How 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!
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Duration: 00:27:55AaS! 256: What Can Gravitational Waves Teach Us About the Big Bang?
Sep 23, 2025What 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!
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Duration: 00:34:13AaS! 255: How Do the Biggest Stars Get So Big?
Sep 09, 2025How 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!
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Duration: 00:31:42AaS! 254: How Do Variable Stars, You Know, Vary?
Aug 19, 2025What 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!
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Duration: 00:25:18AaS! 253: What Does Outer Space Sound Like?
Aug 05, 2025What would the Sun sound like if we could hear it? Does any noise at all happen in the universe? What's the biggest sound of all? I discuss these questions and more in today's Ask a Spaceman!
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<... Duration: 00:31:34AaS! 252: Why Can't We Get Free Energy from the Vacuum?
Jul 22, 2025Why 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!
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Duration: 00:34:19AaS! 251: Are the Cosmic Voids Really Empty?
Jul 08, 2025How do we actually define voids? Are there regions within them that are truly empty? What would it be like to be inside one? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:30:51AaS! 250: Where Do the Constants of Nature Come From? Part 2
Jun 17, 2025Part 2 of 2! What are the modern constants of nature? Is the universe fine-tuned for life? Does the multiverse or string theory explain the origins of the constants? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:24AaS! 249: Where Do the Constants of Nature Come From? Part 1
Jun 03, 2025Part 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!
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Duration: 00:36:11AaS! 248: What's Going on Inside Neutron Stars?
May 20, 2025What'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!
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Duration: 00:32:57AaS! 247: How Can We Get Giant Black Holes in the Early Universe?
May 06, 2025How do we explain the giant black holes appearing in the young universe? Is it possible to directly collapse a black hole, skipping the formation of stars? What does ultraviolet radiation have to do with this? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:28:45AaS! 246: What is Stephen Hawking's Legacy?
Apr 22, 2025How do you measure the impact of a scientist? Does Stephen Hawking compare to Newton or Einstein? What were his contributions to black holes, the big bang, and quantum gravity? I discuss these questions and more in today's Ask a Spaceman!
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<... Duration: 00:36:20AaS! 245: What Made the Moon?
Apr 08, 2025Why is the moon so special? Why do we think a giant impact created it? Why didn't the same thing happen to other planets? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:25:15AaS! 244: What's the Most Important Wavelength in All Astronomy?
Mar 18, 2025What 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!
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Duration: 00:28:17AaS! 243: So Is the Warp Drive Legit or Not?
Mar 04, 2025What 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!
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Duration: 00:31:55AaS! 242: Are There Invisible Stars in the Universe?
Feb 18, 2025What 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!
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Duration: 00:35:50AaS! 241: Could We Travel to Parallel Universes?
Feb 04, 2025Where do parallel universes exist? Could we use wormholes to travel to them? What does time travel have to do with all this? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:32:53AaS! 240: Does the Great Filter Explain Why We're Alone?
Jan 21, 2025What is the Fermi Paradox? How rare is non-intelligent vs intelligent life? What are the challenges a species must overcome to colonize the galaxy? Where is everybody? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:26:44AaS! 239: What Are the Weirdest Hypothetical Particles?
Jan 07, 2025Are dark photons as sinister as they sound? What did the curvaton do in the early universe? And is everything really made of preons? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:28AaS! 238: What Makes the Sun's Corona So Dang Hot?
Dec 17, 2024How can the solar corona be hotter than the surface? What has the Parker Solar probe learned so far? What do magnetic fields have to do with all this? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:20AaS! 237: Could Any Supernova Harm the Earth?
Dec 03, 2024Are 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!
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Duration: 00:30:02AaS! 236: How Exactly Do Black Holes Merge?
Nov 19, 2024How do black holes get close enough to merge? What causes them to emit gravitational waves, and where do the waves come from? What does the merger process look like? I discuss these questions and more in today's Ask a Spaceman!
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<... Duration: 00:33:35AaS! 235: Is it Time to Redefine the Planet?
Nov 05, 2024How 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!
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Duration: 00:36:57AaS! 234: How Could We Turn the Sun into a Telescope?
Oct 15, 2024How do gravitational lenses work? Where would a spacecraft need to be to use the Sun's gravity as a telescope? What could we learn about exoplanets with this on weird trick? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:01AaS! 233: Why Do We Care About Methane on Mars?
Oct 01, 2024What'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!
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Duration: 00:32:55AaS! 232: Is Space Tourism a Good Idea?
Sep 17, 2024Why 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!
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Duration: 00:30:16AaS! 231: What Made the Local Bubble?
Sep 03, 2024Where do we live within the galaxy? What shapes the local bubble? How long will we be inside it? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:29:02AaS! 230: Is the Universe Making Any New Galaxies?
Aug 20, 2024How do galaxies form and evolve? Is the universe still making new ones? What will happen to the current galaxies in the universe? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:26:59AaS! 229: Is the James Webb Breaking Cosmology?
Aug 06, 2024What 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!
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Duration: 00:35:01AaS! 228: Can a Galaxy Be Destroyed?
Jul 16, 2024Can galaxies ever get destroyed? What happens to their stars? Do galaxies ever die? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:30:16AaS! 227: Where is the Center of the Universe?
Jul 02, 2024What does it mean for the universe to have a center? Could we ever travel to ours? What is a singularity? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:33AaS! 226: Does the Universe Get Shorter When You Go Faster?
Jun 18, 2024How does length contraction work in relativity? Do moving objects really get shorter? What about from their perspective? How are we supposed to make sense of any measurement? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:36:17AaS! 225: What is the Cosmic Flaw That Shouldn't Exist?
Jun 04, 2024What 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!
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Duration: 00:40:59AaS! 224: Can Life Survive on Locked Planets?
May 21, 2024How do planets get tidally locked? What are these systems typically like? Can life find a home in such a challenging environment? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:36:06AaS! 223: Why is it So Hard to Return to the Moon?
May 07, 2024If we went to the Moon already, why can't we go back so easily? What technology have we lost? What are we trying to do differently? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:51AaS! 222: What is the Most Distant Thing We Can See?
Apr 16, 2024What's the most distant thing we can see with the naked eye? What about with a telescope? What about at other wavelengths? Is there anything more to see? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:34:21AaS! 221: Will Emergent Gravity Rewrite Physics?
Apr 02, 2024What is "emergence" in physics and why is it a big deal? What would it mean for gravity to be emergent? How would we have to rewrite the laws of physics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:34:45AaS! 220: Will Our Universe End in a Big Rip?
Mar 19, 2024How can a "big rip" tear the universe apart? What does that mean for existence itself? Is it going to happen, and what are we doing to find out? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:24AaS! 219: What's the Best Way to Defend Our Planet?
Mar 05, 2024How do we track dangerous asteroids? What can impacts do to us? What do we plan to do if The Big One is headed for us? Is Armageddon a documentary? I discuss these questions and more in today's Ask a Spaceman!
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<... Duration: 00:40:11AaS! 218: How Do We Know What the Milky Way Looks Like?
Feb 20, 2024Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a "barred spiral" and what does that have to do with our core? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:12AaS! 217: Will We Achieve Fusion Power Soon?
Feb 06, 2024How do we achieve nuclear fusion in the laboratory? What are some experiments that are trying to achieve fusion power generation? Why is it so difficult? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:39:24AaS! 216: Do Aliens Look Like Us?
Jan 16, 2024Is evolution universal throughout the cosmos? What are the different forms that life can take? When did life first appear in the universe? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:40:54AaS! 215: How Does Science Regain Trust?
Jan 02, 2024What forces people to lose trust in science? How does this affect the process of science itself? What are scientists doing to make this worse? How can we fix it? In this special episode themed from my latest book, I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:46:59AaS! 214: Is Empty Space Really...Empty?
Dec 19, 2023What's floating around in space between all the stuff? Are there any truly empty places in the universe? What is the "fabric" of spacetime? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:44:00AaS! 213: How Were Ancient Astronomers So Good?
Dec 05, 2023How were ancient people able to predict eclipses so well? How did they make predictions without modern science? What were they able to discover? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:40AaS! 212: Where Do All the Elements Come From?
Nov 21, 2023What processes create all the elements? Why are some elements more common than others? How does fusion happen inside and outside of a star? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:41:27AaS! 211: Will AI Take Over Astronomy?
Nov 07, 2023How long have astronomers been using artificial intelligence? How do computers sift through massive amounts of data? Will AI discover something new about the universe? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:47:45AaS! 210: How Does Space Affect the Climate?
Oct 17, 2023What triggers ice ages and other climate events? How are sunspot cycles and orbital motions related to climate patterns? What does Jupiter have to do with all this? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:36:26AaS! 209: What Secrets Are Hiding in Triton?
Oct 03, 2023What's so cool about Triton? How did it end up in orbit around Neptune, and what can we learn from it? Could we send a mission there one day? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:47AaS! 208: Where Are All the White Holes?
Sep 19, 2023How are white holes different from black holes? What would happen if you were stuck inside of one? Why don't they appear in the universe? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:34:57AaS! 207: How Far Do We Travel in Our Lives?
Sep 05, 2023What is the combined motion of everything in the universe? How does all of that influence us? Are we just going around in circles, or is there something more? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:36:55AaS! 206: What are the Weirdest Names in Astronomy?
Aug 15, 2023What are some wild stories behind names in astronomy and physics? How did we get the jargon words that we did? What are some of the funniest names? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:27:56AaS! 205: What's the Difference Between Science and Pseudoscience?
Aug 01, 2023What's the difference between science and pseudoscience? What is a scientific mindset? How are we able to spot pseudoscience when it's happening? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:50AaS! 204: How did Annie Jump Cannon Bring Order to the Universe?
Jul 18, 2023How was massive astronomy done in the 1800's? Who were the Harvard Computers? How did Annie Jump Cannon figure out how to classify stars? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:30:03AaS! 203: Is the Universe a Giant Black Hole?
Jul 04, 2023Why didn't the big bang collapse in a singularity? What would a universe-sized black hole be like? Now that I think about it, do we live inside a giant black hole already? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:23:46AaS! 202: Could the Earth Leave the Solar System?
Jun 13, 2023Could we nudge the orbit of the Earth to avoid the death of the Sun? Could it get kicked out of the solar system altogether? What are rogue exoplanets? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:29:11AaS! 201: How Does Light Slow Down?
Jun 06, 2023If light always travels at the speed of light, how does it slow down when passing through air or water? Does it matter if light is made of particles or waves? What's the difference between phase velocity and group velocity, and how does that all play into this? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:29AaS! 200: What are the Top 5 Mysteries in Astronomy?
May 16, 2023What are the biggest mysteries facing modern astronomers? What questions do I wish could be answered in my lifetime? What are most astronomers working on right now? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:17AaS! 199: What are the Top 5 Discoveries of All Time in Astronomy?
May 02, 2023What discoveries and insights made the biggest impacts in astronomy and physics? What were the biggest surprises? What results took the longest to achieve? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:41:56AaS! 198: What's So Weird About Black Hole Shadows?
Apr 18, 2023How does a black hole make a shadow? What can we learn from it? What are we seeing when we look at a black hole? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:29:44AaS! 197: Which is Better, Human or Robotic Exploration?
Apr 04, 2023What are the advantages of robotic exploration of the solar system? What are the limitations? Is there any situation where human exploration is better? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:34:46AaS! 196: Could We Ever Build a Dyson Sphere?
Mar 21, 2023What are Dyson spheres? What would be involved in building one? How much energy would it cost, and could we ever pay it back? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:21AaS! 195: How Cold Can Space Get?
Mar 07, 2023What's the temperature of deep space? Can it get any colder than that? How do we even define temperature when there's nothing around? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:28:21AaS! 194: Does the Universe Rotate?
Feb 21, 2023How do we know that the universe doesn't rotate? Why would it matter if it did? What does all this have to do with time travel? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:41:46AaS! 193: What are the Blue Stragglers?
Feb 07, 2023What are blue straggler stars? How were they first discovered? What do they tell us about star clusters and the evolution of stars? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:56AaS! 192: Can Tachyons Exist?
Jan 17, 2023Is it possible for anything to travel faster than light? What about tachyons? How would faster-than-light travel break causality? And just what the heck is causality, anyway? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:51AaS! 191: What is the Meaning of Quantum Mechanics? (Part 9: Both/And)
Jan 03, 2023Part 9! What is the role of consciousness in quantum mechanics, if there even is one? Is there any way at all to develop a coherent view of nature based on quantum mechanics? What are the ultimate lessons that we can learn from quantum mechanics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:31:03AaS! 190: What is the Meaning of Quantum Mechanics? (Part 8: For Nothing is Hidden)
Dec 20, 2022Part 8! What is real in quantum mechanics, and what are mere mathematical tricks? Can the probability waves be real, and what would that mean? What is Pilot-Wave theory? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:40:30AaS! 189: What is the Meaning of Quantum Mechanics? (Part 7: Many Worlds, Infinite Possibilities)
Dec 06, 2022Part 7! What is the many-worlds interpretation of quantum mechanics? How does decoherence play a critical role? What are the strengths and weaknesses of this idea? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:47:04AaS! 188: What is the Meaning of Quantum Mechanics? (Part 6: Einstein's Revenge)
Nov 15, 2022Part 6! What were Einstein's objections to quantum mechanics? Why was he so bothered by non-locality? What is the EPR paradox? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:35What is the Meaning of Quantum Mechanics? (Part 5: Dreams of Copenhagen)
Nov 01, 2022Part 5! What is the Copenhagen interpretation? How did the debates between Heisenberg and Schrodinger influence later physicists? What are the strengths and weaknesses of the "shut up and calculate" approach to quantum mechanics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:01What is the Meaning of Quantum Mechanics? (Part 4: It's a Quantum, Quantum, Quantum World)
Oct 18, 2022Part 4! What are the basic lessons of quantum mechanics? What does quantum mechanics teach us about the nature of reality? How does a quantum worldview differ from a classical one? I discuss these questions and more in today's Ask a Spaceman!
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<... Duration: 00:27:53What is the Meaning of Quantum Mechanics? (Part 3: There and Back Again)
Oct 04, 2022Part 3! Who developed quantum theory and why? What experiments motivated the creation of quantum mechanics? How was quantum mechanics a total break from classical physics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:45:42What is the Meaning of Quantum Mechanics? (Part 2: Quantum Mechanics 102)
Sep 20, 2022Part 2! How do physicists understand quantum mechanics? What are the postulates and principles of quantum mechanics? How do the foundations of quantum mechanics compare to other theories? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:41:41What is the Meaning of Quantum Mechanics? (Part 1: This Way to the Weird)
Sep 06, 2022Part 1! Where does quantum theory fit in the larger tapestry of physics? What is the domain of quantum mechanics? And most importantly, what are the limits of quantum physics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:21Wait, Super-Atoms are a Real Thing?
Aug 16, 2022How do you make a super-atom? What can they be used for? What does this mean for quantum mechanics? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:26What is the Principle of Least Action?
Aug 02, 2022What makes the principle of least action so important? Who came up with it? Is it all just a bunch of math or does it actually mean something? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:36:39How Does Pulsar Timing Work?
Jul 19, 2022What is a pulsar? How can we use them to map gravitational waves? What kind of technology does it take? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:58What are the Alternatives to Dark Matter?
Jul 05, 2022What are some of the problems with dark matter? What about modified gravity? Are there any other solutions? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:44:49How Big Can Planets Get?
Jun 21, 2022How big can a rocky planet get? Can a rocky planet turn into a gas giant? Why are some planets rocky and others gassy? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:44How Do Black Holes Affect Their Galaxies?
Jun 07, 2022How do giant black holes shut off star formation? How do they turn it back on? Which came first, the black hole or the galaxy? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:33:26Why is Gravity So Weak?
May 17, 2022How did gravity get so ridiculously weak? Could it be related to extra dimensions? What does string theory and the concept of the "bulk" have to do with it? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:06Should We Be Afraid of the Dipole Repeller?
May 03, 2022What is the dipole repeller? Why is it a dipole? What is it repelling? What is the Bootes Void and how is it connected to dark energy? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:38:34What Solves the Twin Paradox?
Apr 19, 2022What does everybody think is the twin paradox? What's the REAL twin paradox? How is the paradox resolved, and what does it teach us about synchronicity? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:28:27How Does Radioactive Decay Work?
Apr 05, 2022How was radioactive decay discovered? What are the different kinds of decay? How does quantum mechanics make all this happen? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:30:47What Are Some Alternatives to the Big Bang Theory?
Mar 15, 2022What makes the Big Bang theory so successful? How were alternatives ruled out? What are the electric universe and steady state theories? Do any other options remain, like conformal cyclic cosmology? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:36What are Lagrange Points?
Mar 01, 2022Why are Lagrange points so crucial to astronomy? What makes even simple gravity so difficult? How do you "put" something at a Lagrange point? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:30:07What's So Fine About the Fine Structure Constant?
Feb 15, 2022What is the fine structure constant? Where does it come from? Why is it so important? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:37:45What Is Loop Quantum Gravity?
Feb 01, 2022Why do we care about loop quantum gravity? Is it a viable path to uniting quantum mechanics and general relativity? What does it mean for spacetime to be discrete? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:39:35Can We Get Some Love for Globular Clusters?
Jan 18, 2022How are globular clusters so old? Where did they come from, and how are they linked to galaxy formation? What makes them so globular, anyway? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:29:38Do We Live In a Giant Simulation?
Jan 04, 2022What is the simulation hypothesis? Is it just pseudoscience? How do we grapple with its implications? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:46:31What's the Truth Behind 'Oumuamua?
Dec 21, 2021Where did 'Oumuamua come from? What is it made of, and how did it end up here? Is it really an artifact of an alien civilization? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:47:18What Comes After the James Webb Space Telescope?
Dec 07, 2021What missions will come after the James Webb Space Telescope launches? What new discoveries await us? How long will they take to start? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:35:19Where Can We Find Diamond Rain?
Nov 16, 2021How do giant planets make diamond rain? Does it really, you know, rain? Where does diamond rain exist? I discuss these questions and more in today's Ask a Spaceman!
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Duration: 00:27:02