How and why would humans live far from stars? Exploring deep-space habitats, artificial suns, and megastructures. Join FlexiSpot's Valentine's Specials with up to 65% off! Shop now and use my code "YTE730" to save an extra $30 on the E7 Standing Desk. FlexiSpot E7...
What Would Happen If a Comet Hit Earth?
What if a comet hit Earth? Faster than asteroids and packed with primordial chemistry, a single impact could cause mass extinction—or help seed life itself. 🚀 Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join 🛒...
Does Humanity Need To Be Unified To Survive and Settle Space?
Must humanity unite to colonize space, or can rivalry and diversity be our greatest strengths among the stars? Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Check out Mad Kings: https://nebula.tv/madkings?ref=isaacarthur...
Why Aliens Can’t Build Rockets – The Oxygen Bottleneck
Why some alien civilizations may never reach space 🚀 Without enough oxygen, fire fails—and without fire, industry, rockets, and stars remain forever out of reach. 🚀 Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join...
The Fermi Paradox: Air — Atmospheres as a Great Filter
Why is air the rarest and most crucial ingredient for life? We explore how atmospheres form, fail, and filter entire worlds—and how this shapes the Fermi Paradox and the search for alien civilizations. Get Nebula using my link for 50% off an annual subscription:...
Asteroid City States – Living in Mobile Habitats Powered by Resource Extraction
Asteroid mines become mobile city-states. Explore how hollowed asteroids grow into sovereign habitats, economies, and civilizations. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video...
Why Advanced Civilizations Prefer Cold, Dark, and Quiet Places
Advanced civilizations may hide in cold, dark, quiet space—not from fear, but efficiency. Physics favors silence, low temperatures, and stability over cosmic fireworks. 🚀 Join this channel to get access to perks:...
How Big Could a Space Habitat Get?
How big could space habitats really get? From O’Neill cylinders to Ringworlds and Topopolises, we explore the true limits of megastructure scale. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video...
Cryogenic Arks – Sleeping Through the Ages
From frozen habitats to millennia-long journeys, we explore the science behind cryogenic arks and deep-time interstellar travel. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Check out Joe Scott's Oldest & Newest:...
Talking the Future: Science, Space, and Civilization | Live Q&A
It’s been two years since our last live session, and with so much changing in science and AI, it’s time to catch up. I’ll be taking your questions live on everything from space megastructures to the future of civilization. 🚀 Join this channel to get access to perks:...
Which Stars Could We Live Around? Ranking Every Type of Star
From giant O-stars to dim brown dwarfs, we rank every stellar class by how well they could host life, Dyson swarms, and advanced civilizations across cosmic time. Watch my exclusive video Rogue AI Empires:...
Surviving the Death of the Sun – Moving Earth or Finding a New Home
Discover how to move worlds and forge new stars. Go to the link: https://imprintapp.com/isaacarthur to get 25% off an annual membership Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon:...
