President of the National Space Society and Host of Science & Futurism with Isaac Arthur. Exploring space, megastructures, alien civilizations, deep time, and humanity’s long-term future. 1M+ YouTube subscribers, 800+ episodes.
Isaac Arthur
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Space Habitats: The Megastructures We’ll Call Home
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Explore the future of space habitats, from rotating cylinders and torus colonies to orbital cities, asteroid homes, and the megastructures humanity may one day live inside.
The First Interplanetary War: Tactics in the Solar System
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In space, everything is a weapon. From orbits to infrastructure, here’s how the first real war between worlds might actually be fought.
What If Humanity Never Masters Fusion?
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What if fusion power never becomes practical? Humanity still has solar, fission, storage, beamed power, and enough known physics to build a spacefaring future.
The Zoo Hypothesis and the Fermi Paradox... Are We Being Watched?
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Are aliens watching us? The Zoo Hypothesis suggests advanced civilizations may be hiding. Explore the Fermi Paradox, and the unsettling possibility we are not alone—but observed.
Merging with Alien Civilizations - Our Future in a Galactic Community
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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?
Antimatter Propulsion
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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.
The Moon Base: Shackleton Crater vs Other Sites
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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.
Don’t Panic: A Guide to Artificial Intelligence
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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.
Fleet Unity - The Eridani Expedition - The Interstellar Beachhead
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Before Fleet Unity can colonize Eridani, someone must arrive first, build the brakes, and turn frozen moons into the machinery of interstellar arrival.
The Von Braun Wheel - Building Humanity’s First Rotating Space Station
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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.
