Science & Futurism with Isaac Arthur

What if fusion power never becomes practical? Humanity still has solar, fission, storage, beamed power, and enough known physics to build a spacefaring future. 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-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it 🛒...

Where should humanity build its first Moon base: Shackleton Crater, lava tubes, lunar maria, or the far side? The Moon’s future may be a network, not one base. 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-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it 🛒...

Where should humanity build its first Moon base: Shackleton Crater, lava tubes, lunar maria, or the far side? The Moon’s future may be a network, not one base. 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-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it 🛒...

First contact is easy. Living together isn’t. How would humanity merge with alien civilizations in a shared galaxy of trade, politics, and uneasy peace? 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-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it Check out...

First contact is easy. Living together isn’t. How would humanity merge with alien civilizations in a shared galaxy of trade, politics, and uneasy peace? 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-nearby-supernovae-could-one-destroy-earth-and-could-we-stop-it Check out...

Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a...

Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a...

Before NASA, we had a plan for a rotating space station. The Von Braun Wheel could be humanity’s first step toward artificial gravity, orbital habitats, and permanent life beyond Earth. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age 🛒 SFIA M...

Before NASA, we had a plan for a rotating space station. The Von Braun Wheel could be humanity’s first step toward artificial gravity, orbital habitats, and permanent life beyond Earth. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age 🛒 SFIA M...

Are aliens watching us? The Zoo Hypothesis suggests advanced civilizations may be hiding, enforcing a galactic quarantine, or masking reality itself. Explore the Fermi Paradox, Dyson dilemma, and the unsettling possibility we are not alone—but observed. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: ht...

Are aliens watching us? The Zoo Hypothesis suggests advanced civilizations may be hiding, enforcing a galactic quarantine, or masking reality itself. Explore the Fermi Paradox, Dyson dilemma, and the unsettling possibility we are not alone—but observed. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: ht...

Artificial intelligence is changing the world, but not quite the way headlines suggest. Here’s a calmer look at AI’s risks, limits, and real potential. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Abolish Everything: https://nebul...

Artificial intelligence is changing the world, but not quite the way headlines suggest. Here’s a calmer look at AI’s risks, limits, and real potential. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Abolish Everything: https://nebul...

In space, everything is a weapon. From orbits to infrastructure, here’s how the first real war between worlds might actually be fought. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Real Engineering: https://nebula.tv/realengineeri...

In space, everything is a weapon. From orbits to infrastructure, here’s how the first real war between worlds might actually be fought. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Real Engineering: https://nebula.tv/realengineeri...

Before Fleet Unity can colonize Eridani, someone must arrive first, build the brakes, and turn frozen moons into the machinery of interstellar arrival. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Quinn's Ideas: https://nebula.tv/...

Before Fleet Unity can colonize Eridani, someone must arrive first, build the brakes, and turn frozen moons into the machinery of interstellar arrival. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Quinn's Ideas: https://nebula.tv/...

Explore SETI’s history and modern methods—from radio and laser searches to Dyson spheres and technosignatures—and how we might detect alien civilizations across the galaxy. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Gods & M...

Explore SETI’s history and modern methods—from radio and laser searches to Dyson spheres and technosignatures—and how we might detect alien civilizations across the galaxy. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Gods & M...

What if the oldest aliens in the galaxy are not empires, but nomads? We explore wandering fleets, deep-time survival, and civilizations without a homeworld. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Gods & Monsters: https:/...

What if the oldest aliens in the galaxy are not empires, but nomads? We explore wandering fleets, deep-time survival, and civilizations without a homeworld. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Gods & Monsters: https:/...

Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-survi...

Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-survi...

When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Practical Engineering: https://nebula.tv/pra...

When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age Check out Practical Engineering: https://nebula.tv/pra...