Why Haven’t We Found Dyson Spheres Yet?
From Dysonian SETI to waste heat and galactic timelines, we explore why we haven’t found Dyson Spheres—and what their absence reveals about civilization. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Nearby Supernovae: https://nebula.tv/videos/isaacarthur-... 🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.... 🌐 Visit our Website: http://www.isaacarthur.net ❤️ Support us on Patreon: / isaacarthur ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a... 👥 Facebook Group: / 1583992725237264 📣 Reddit Community: / isaacarthur 🐦 Follow on Twitter / X: / isaac_a_arthur 💬 SFIA Discord Server: / discord Credits: Why Haven’t We Found Dyson Spheres Yet? Written, Produced & Narrated by: Isaac Arthur Music Courtesy of Stellardrone & Chris Zabriskie Select imagery/video supplied by Getty Images, Jeremy Jozwik, Ken York, Sergio Botero Chapters 0:00 Intro 2:41 What Could We Actually See? 9:11 The Timeline Problem 12:24 Looking Out Is Looking Back 17:42 The Dyson Dilemma 26:07 Alternative Paths: Civilizations That Don’t Expand 29:26 Energy, Efficiency, and the Problem of Waste Heat 33:21 Nebula 34:22 The Silence of the Spheres
The Physics of FTL Travel
America's Got Talent 2026 ALL AUDITIONS | Week 2
Did Physics Secretly Bring Back AEther?
Strange Lifeforms: The Chemistry of Alien Worlds
When Earth Turned Into A Giant Jungle
So, We Built a Moon Base. What's Next? | Q&A 433
FINALLY! Starship's Next Giant Leap
I Ate Across The World of Warcraft!
Antimatter Propulsion
She Was Trying to Cut It With Scissors and The Grass Was Taller Than My Mowers
10 Prehistoric Civilizations That Prehistoric Maps Prove That They Existed
Building a Dyson Swarm from Scratch
The Tokamak Problem: Can We Ever Make Fusion Practical?
I Secretly Stole a Streamer’s Car
Shade Tree Used Car Lot Strikes AGAIN! (Customer JUST BOUGHT this CAR) 2007 Kia Optima 2.4
Making GOOD Retracting Casters is HARD
The 10 Best Great Filters That Could Explain the Fermi Paradox
The Zoo Hypothesis and the Fermi Paradox... Are We Being Watched?
Lost Space Colonies
