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You might be an alien. If panspermia is real, life on Earth began on an interstellar comet like ’Oumuamua. Are we part of a galactic biosphere? 🌌🛸 🚀 Join this channel to get access to perks:...

Could life on Earth have arrived from space? Explore panspermia, alien comets, and how life might spread across the galaxy. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video...

Humanity’s first interstellar ark becomes something bigger. Explore Fleet Unity—a roaming civilization, ship-turned-shipyard, and the birth of humanity’s first true interstellar armada. Get Nebula using my link for 50% off an annual subscription:...

Knowledge is power, and needs it. Being intelligent isn’t free — brains consume massive energy. What if most alien life never reaches civilization because intelligence is too expensive? The hidden cost of being smart might explain the Fermi...

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How interstellar relays could move data, cargo, and starships between stars using lasers, light sails, and cosmic-scale infrastructure. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive...

Is math truly universal—or just human? Explore how alien minds might think, count, and reason in ways we don’t recognize as mathematics at all. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my...