
How Many Alien Civilizations Are There? (Narration Only)
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Are we alone in the universe—or just early to the party? We’ll explore the math, models, and megastructures that might answer how many alien civilizations are out there, and why the night sky remains so quiet.
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Credits:
How Many Alien Civilizations Are There?
Episode 723; June 8, 2025
Written, Produced & Narrated by: Isaac Arthur
Editor: Ludwig Luska
Graphics: Ken York YD Visual
Select imagery/video supplied by Getty Images
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Phase Shift, "Forest Night"
Chris Zabriskie, "Unfoldment, Revealment" & "A New Day in a New Sector"
Koalips, "Kvazar"
Stellardrone, "Red Giant" & "Billions and Billions"
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