SETI Explained - How We Search for Alien Civilizations

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: Watch my exclusive video Surviving a New Ice Age: Check out Gods & Monsters: 🛒 SFIA Merchandise: 🌐 Visit our Website: ❤️ Support us on Patreon: ⭐ Support us on Subscribestar: 👥 Facebook Group: 📣 Reddit Community: 🐦 Follow on Twitter / X: 💬 SFIA Discord Server: Credits: SETI Explained - How We Search for Alien Civilizations Written, Produced & Narrated by: Isaac Arthur Graphics from Ken York, Sergio Botero Select imagery/video supplied by Getty Images Chapters 0:00 Intro 0:50 Why SETI Is Harder Than It Sounds 2:50 The Birth of SETI 6:15 Why Radio SETI Made Sense—and Why It Didn’t Work 9:34 The Shift in Perspective 10:55 Laser SETI 13:52 Dysonian SETI 16:59 Signals, Artifacts, and Echoes 19:09 Recognition Is Harder Than Detection 21:30 Gods & Monsters 22:30 What SETI Looks Like Today 25:18 SETI as a Mirror, Not a Phone Call See Privacy Policy at and California Privacy Notice at .

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SETI Explained - How We Search for Alien Civilizations is an episode from Science & Futurism with Isaac Arthur by Isaac Arthur.

This episode is 00:26:45 long.

This episode was published on May 12, 2026.

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