There’s a hard limit to humanity’s expansion in the universe. So, how big can we get?

How Far Beyond Earth Could Humanity Spread? PBS Space Time

Premiered April 12, 2023
How Far Beyond Earth Could Humanity Spread?

Future generations may one day explore the cosmos and even settle entire other galaxies. But there is a hard limit to how much of the universe we can expand into. So, how big can humanity get?

About the Program

PBS Space Time

PBS Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth. Host Matt O'Dowd breaks down both the basic and incredibly complex sides of space and time.

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