Space is big—but could life out there be even bigger? Join us as we ask just how enormous alien life can get—and what it might look like.

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Credits:
Cosmic Megafauna — Could Giant Alien Life Forms Exist?
Episode 727; June 26, 2025
Written, Produced & Narrated by: Isaac Arthur.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Stellardrone, \