Uploaded February 2026 | Updated September 2026, 2 weeks ago

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Why might alien intelligence evolve at gigantic scales? Big Alien Theory explores how size alone could silence advanced civilizations.

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Credits:
Big Alien Theory
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images
Music Courtesy of Epidemic Sound epidemicsound.com/creator
Phase Shift, "Forest Night"
Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"
Stellardrone, "Billions and Billions"