All Episodes

AaS! 273: What if the Universe Had No Beginning?

AaS! 272: Are Neutrinos Their Own Evil Twins?

AaS! 271: What Happens When Light Goes Boom?

AaS! 270: Is the Universe…Defective?

AaS! 269: Why Are Interstellar Objects So Weird?

AaS! 268: What are Little Red Dots?

AaS! 267: Is the Universe Older than We Think?

AaS! 266: Is the Universe Made of Math?

AaS! 265: Does Antimatter Fall Up?

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

AaS! 263: Does Free Will Exist?

AaS! 262: Does the Universe Have Extra Dimensions?

AaS! 261: What are Black Dwarfs?

AaS! 260: What's the Big Deal with the Weak Force?

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

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

AaS! 257: How Does One Go About Smashing Particles?

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

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

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

AaS! 253: What Does Outer Space Sound Like?

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

AaS! 251: Are the Cosmic Voids Really Empty?

AaS! 250: Where Do the Constants of Nature Come From? Part 2

AaS! 249: Where Do the Constants of Nature Come From? Part 1

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

AaS! 247: How Can We Get Giant Black Holes in the Early Universe?

AaS! 246: What is Stephen Hawking's Legacy?

AaS! 245: What Made the Moon?

AaS! 244: What's the Most Important Wavelength in All Astronomy?

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

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

AaS! 241: Could We Travel to Parallel Universes?

AaS! 240: Does the Great Filter Explain Why We're Alone?

AaS! 239: What Are the Weirdest Hypothetical Particles?

AaS! 238: What Makes the Sun's Corona So Dang Hot?

AaS! 237: Could Any Supernova Harm the Earth?

AaS! 236: How Exactly Do Black Holes Merge?

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

AaS! 234: How Could We Turn the Sun into a Telescope?

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

AaS! 232: Is Space Tourism a Good Idea?

AaS! 231: What Made the Local Bubble?

AaS! 230: Is the Universe Making Any New Galaxies?

AaS! 229: Is the James Webb Breaking Cosmology?

AaS! 228: Can a Galaxy Be Destroyed?

AaS! 227: Where is the Center of the Universe?

AaS! 226: Does the Universe Get Shorter When You Go Faster?

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

AaS! 224: Can Life Survive on Locked Planets?

AaS! 223: Why is it So Hard to Return to the Moon?

AaS! 222: What is the Most Distant Thing We Can See?

AaS! 221: Will Emergent Gravity Rewrite Physics?

AaS! 220: Will Our Universe End in a Big Rip?

AaS! 219: What's the Best Way to Defend Our Planet?

AaS! 218: How Do We Know What the Milky Way Looks Like?

AaS! 217: Will We Achieve Fusion Power Soon?

AaS! 216: Do Aliens Look Like Us?

AaS! 215: How Does Science Regain Trust?

AaS! 214: Is Empty Space Really...Empty?

AaS! 213: How Were Ancient Astronomers So Good?

AaS! 212: Where Do All the Elements Come From?

AaS! 211: Will AI Take Over Astronomy?

AaS! 210: How Does Space Affect the Climate?

AaS! 209: What Secrets Are Hiding in Triton?

AaS! 208: Where Are All the White Holes?

AaS! 207: How Far Do We Travel in Our Lives?

AaS! 206: What are the Weirdest Names in Astronomy?

AaS! 205: What's the Difference Between Science and Pseudoscience?

AaS! 204: How did Annie Jump Cannon Bring Order to the Universe?

AaS! 203: Is the Universe a Giant Black Hole?

AaS! 202: Could the Earth Leave the Solar System?

AaS! 201: How Does Light Slow Down?

AaS! 200: What are the Top 5 Mysteries in Astronomy?

AaS! 199: What are the Top 5 Discoveries of All Time in Astronomy?

AaS! 198: What's So Weird About Black Hole Shadows?

AaS! 197: Which is Better, Human or Robotic Exploration?

AaS! 196: Could We Ever Build a Dyson Sphere?

AaS! 195: How Cold Can Space Get?

AaS! 194: Does the Universe Rotate?

AaS! 193: What are the Blue Stragglers?

AaS! 192: Can Tachyons Exist?

AaS! 191: What is the Meaning of Quantum Mechanics? (Part 9: Both/And)

AaS! 190: What is the Meaning of Quantum Mechanics? (Part 8: For Nothing is Hidden)

AaS! 189: What is the Meaning of Quantum Mechanics? (Part 7: Many Worlds, Infinite Possibilities)

AaS! 188: What is the Meaning of Quantum Mechanics? (Part 6: Einstein's Revenge)

AaS! 187: What is the Meaning of Quantum Mechanics? (Part 5: Dreams of Copenhagen)

AaS! 186: What is the Meaning of Quantum Mechanics? (Part 4: It's a Quantum, Quantum, Quantum World)

AaS! 185: What is the Meaning of Quantum Mechanics? (Part 3: There and Back Again)

AaS! 184: What is the Meaning of Quantum Mechanics? (Part 2: Quantum Mechanics 102)

AaS! 183: What is the Meaning of Quantum Mechanics? (Part 1: This Way to the Weird)

AaS! 182: Wait, Super-Atoms are a Real Thing?

AaS! 181: What is the Principle of Least Action?

AaS! 180: How Does Pulsar Timing Work?

AaS! 179: What are the Alternatives to Dark Matter?

AaS! 178: How Big Can Planets Get?

AaS! 177: How Do Black Holes Affect Their Galaxies?

AaS! 176: Why is Gravity So Weak?

AaS! 175: Should We Be Afraid of the Dipole Repeller?

AaS! 174: What Solves the Twin Paradox?

AaS! 173: How Does Radioactive Decay Work?

AaS! 172: What Are Some Alternatives to the Big Bang Theory?

AaS! 171: What are Lagrange Points?

AaS! 170: What's So Fine About the Fine Structure Constant?

AaS! 169: What Is Loop Quantum Gravity?

AaS! 168: Can We Get Some Love for Globular Clusters?

AaS! 167: Do We Live In a Giant Simulation?

AaS! 166: What's the Truth Behind 'Oumuamua?

AaS! 165: What Comes After the James Webb Space Telescope?

AaS! 164: Where Can We Find Diamond Rain?

AaS! 163: Will Our Universe End in a False Vacuum Decay?

AaS! 162: What the Heck are Gamma Ray Bursts?

AaS! 161: Is There a Crisis in Cosmology? RELOADED

AaS! 160: What's the Best Way to Search for Life?

AaS! 159: Why Should We Geek Out Over Maxwell?

AaS! 158: What's So Groovy About Gravitational Waves? (Part 2)

AaS! 157: What's So Groovy About Gravitational Waves? (Part 1)

AaS! 156: What are Asteroids Good For?

AaS! 155: Who's Going To Clean Up All That Space Junk?

AaS! 154: Is There REALLY a Crisis in Cosmology?

AaS! 153: What is a Black Hole Firewall, and Do They Really Exist??

AaS! 152: Could We Really Terraform Mars?

AaS! 151: How Do Quantum Computers Work?

AaS! 150: Why Don't Neutrinos Make Any Sense?

AaS! 149: Is the Universe a Fractal?

AaS! 148: What's Outside the Universe?

AaS! 147: What's the Deal with the Uncertainty Principle?

AaS! 146: Astro101 Part 8 - What is the Future of Astronomy?

AaS! 145: Astro101 Part 7 - What is the Universe?

AaS! 144: Astro101 Part 6 - What are Galaxies?

AaS! 143: Astro101 Part 5 - What are Neutron Stars, White Dwarfs, and Black Holes?

AaS! 142: Astro101 Part 4 - What Happens When Stars Die?

AaS! 141: Astro101 Part 3 - What is a Star?

AaS! 140: Astro101 Part 2 - Who lives in the solar system?

AaS! 139: Astro101 Part 1 - Why bother with astronomy?

AaS! 138: Could the "emdrive" really work?

AaS! 137: What's really at the center of a black hole?

AaS! 136: Can Planets Survive the Death of Their Star?

AaS! 135: Why Aren't There More Black Physicists?

AaS! 134: Is There a Fifth Force of Nature?

AaS! 133: How Do We Know the Earth Is Curved?

AaS! 132: What Did Einstein Get Wrong?

AaS! 131: What's So Cool About the TRAPPIST-1 System?

AaS! 130: What's the Most Amazing Thing About the Universe?

AaS! 129: Did the Big Bang Make Black Holes?

AaS! 128: Why Are We Missing All the Baryons?

AaS! 127: What Was Newton's Big Deal?

AaS! 126: What's the Wildest Weather in the Solar System?

AaS! 125: Does Planet Nine Exist?

AaS! 124: Why Is the Speed of Light the Way It Is?

How to Die in Space: Sneak Preview

AaS! 123: What Powers a Hypernova?

AaS! 122: Is String Theory Worth It? (Part 8: An Armageddon of Strings)

AaS! 121: Is String Theory Worth It? (Part 7: A Correspondence from a Dear Friend)

AaS! 120: Is String Theory Worth It? (Part 6: We Should Probably Test This)

AaS! 119: Is String Theory Worth It? (Part 5: Duality of the Fates)

AaS! 118: Is String Theory Worth It? (Part 4: What We Need is a Superhero)

AaS! 117: Is String Theory Worth It? (Part 3: Dimension is Destiny)

AaS! 116: Is String Theory Worth It? (Part 2: Tuning the Strings)

AaS! 115: Is String Theory Worth It? (Part 1: Unify This!)

AaS! 114: How Did Spectroscopy Revolutionize Astronomy?

AaS! 113: Is the James Webb Space Telescope Worth the Wait?

AaS! 112: Why Can't I Quantum Tunnel Myself?

AaS! 111: What's It Like to Fall Into a Black Hole? (Redux)

AaS! 110: Is the Universe Really Predictable?

AaS! 109: What Are the Mysterious Cosmic Strings?

AaS! 108: What Do We Learn From Eclipses?

AaS! 107: Is Interstellar Travel Possible?

AaS! 106: How Do We Measure the Expansion of the Universe?

AaS! 105: Is Everything a Wave or a Particle, and Why Does My Head Hurt?

AaS! 104: What Turned Venus Into Hell?

AaS! 103: What's Wrong With the Cosmic Calendar?

AaS! 102: What Are the Mighty Clusters of Galaxies?

AaS! 101: What Is the Black Hole Information Paradox?

AaS! 100: Why Avoid the Cosmic Voids?

AaS! 99: Do We Live in the Multiverse?

AaS! 98: Who's in Charge of the Quantum World?

AaS! 97: What Makes the Strong Force So Strong?

AaS! 96: Hey, Who Took All the Antimatter?

AaS! 95: Does Light Experience Time? (And Other Mysteries)

AaS! 94: How Did We Figure Out That Stuff Is Made of Atoms?

AaS! 93: Does the Oort Cloud Exist?

AaS! 92: I Give Up, What Is Time?

AaS! 91: Could We Blow Up a Star?

AaS! 90: Why Are Brown Dwarf Stars So Weird?

AaS! 89: What Makes All the Light?

A Reading from the Book of Paul

AaS! 88: Is the Drake Equation Useful?

AaS! 87: How Do Magnets Work?

AaS! 86: Why Do We Need Cosmic Inflation? (Part 2)

AaS! 85: Why Do We Need Cosmic Inflation? (Part 1)

AaS! 84: How Does Dark Energy Accelerate the Universe?

AaS! 83: Can Entangled Particles Communicate Faster Than Light?

AaS! 82: What Awoke the Cosmic Dawn?

AaS! 81: How Do You Build a Rocket-Ship?

AaS! 80: What Made the "OMG Particle" So Special?

AaS! 79: Seriously, What Is Gravity? (Part 3)

AaS! 78: Seriously, What Is Gravity? (Part 2)

AaS! 77: Seriously, What is Gravity? (Part 1)

AaS! 76: Iceland Question Bonanza!

AaS! 75: Why Is Iceland So Warm?

AaS! 74: Why Are Small Stars Such a Big Deal?

AaS! 73: Why Should We Believe The Big Bang?

AaS! 72: How Does Gravity Make a Lens?

AaS! 71: Who Lives in the Particle Zoo?

AaS! 70: Can We Have Some Quark Stars, Please?

AstroTour: Atacama Dark Sky Retreat

AaS! 69: What Makes a Blazar Blaze So Brightly?

AaS! 68: Do We Live in a Hologram?

AaS! 67: Why Can't I Be an Astrophysicist?

AaS! 66: What in the World Is Metallic Hydrogen?

AaS! 65: How Does One Become an Astrophysicist?

All about the "Sea and the Stars" AstroTour

AaS! 64: What Fate Awaits the Voyagers?

AaS! 63: How Are We to Understand Quantum Spin?

AaS! 62: Why Do Some Stars Blow Up?

Update and Space Radio Preview

AaS! 61: Where Do Giant Magnetic Fields Come From?

AaS! 60: What's the Deal With Time Crystals?

AaS! 59: Do Black Holes Exist?

AaS! 58: Is Time Travel Possible?

AaS! 57: What's the Matter With Dark Matter?

AaS! 56: What Is the "Axis of Evil"?

AaS! 55: Does Dark Energy Exist?

AaS! 54: What Happens When Galaxies Collide?

AaS! 53: Why Is the Higgs Boson Important? (Part 2)

AaS! 52: Why Is the Higgs Boson Important? (Part 1)

AaS! 51: What Has New Horizons Learned About Pluto?

AaS! 50: What's Up With Saturn's Rings?

AaS! 49: What Were the Most Clever Experiments of All Time?

AaS! 48: Why Are Kepler's Laws Important?

AaS! 47: What's the Universe Made Of?

AaS! 46: How to Describe Astronomy to the Blind?

AaS! 45: Wormholes - Deal or No Deal?

AaS! 44: How Does the Sun Get Spots?

AaS! 43: What's the Shape of the Universe?

AaS! 42: Where Do "Weird" Radio Signals Come From?

AaS! 41: How Do (Regular) Novas Work?

AaS! 40: Do Black Holes Die?

AaS! 39: Is There Life on Europa?

AaS! 38: How Do We See Beyond the Visible?

AaS! 37: What is the Cosmic Microwave Background (Part 2)?

AaS! 36: What is the Cosmic Microwave Background? (Part 1)

AaS! 35: What Are "Virtual Particles"?

AaS! 34: What Is the Great Attractor?

AaS! 33: What If the Moon Disappeared?

AaS! 32: Where Do Nebulae Come From?

AaS! 31: How Can the Universe Expand Faster Than Light?

AaS! 30: 2nd-Grade Question Bonanza!

AaS! 29: Why Does E=mc^2?

AaS! 28: What's the Point in Talking About Science?

AaS! 27: How Does Gravity Make Waves?

AaS! 26: Wolf-Rayet Stars: Sci-Fi or What?

AaS! 25: How Do We Know How Far Away Stuff Is...Far Away?

AaS! 24: What's the Beef With Quantum Gravity?

Aas! 23: What's Up With Exoplanets?

AaS! Transient Special: What was the Christmas star?

AaS! 22: Question Bonanza!

AaS! 21: Are We Really Made of Stars?

AaS! 20: How Much Light Is in the Universe?

AaS! Special: What did you think of The Martian?

AaS! 19: How Do Planets Get Magnetic Fields?

AaS! 18: Is the Universe Dying?

AaS! 17: What Banged the Big Bang?

AaS! 16: How Do Spiral Galaxies Form?

AaS! 15: Will We Colonize Mars?

AaS! 14: What is Spacetime? (Part 2)

AaS! 14: What Is Spacetime? (Part 1)

AaS! 13: What the Heck Is a Magnetar?

AaS! 12: Is Life Possible Around Binary Stars?

AaS! 11: What Do We Do in Space?

AaS! 10: How Do Black Holes Form?

AaS! 9: How Big Is the Universe?

AaS! 8: Will a Comet Kill Us All?

AaS! 7: How Do We Know That Dark Matter Exists?

AaS! 6: When Did the First Stars Appear?

AaS! Transient Special: When is the next eclipse?

AaS! 5: Where Did the Oceans Come From?

AaS! 4: Are There Aliens...Out There?