PBS Space Time

What If Humanity Is Among The First Spacefaring Civilization

Season 8 Episode 32 | 15m 30s | Video has closed captioning.

Half of the universe is filled with expansionist alien civilizations, and it’s only a matter of time before they’ll reach us. OK, that sounded a little sensationalist. But it’s also the conclusion of a recent astrophysics paper. Let’s see how they figure this, and whether we should take it seriously

Aired: 11/09/22

Rating: NR


Problems Playing Video? | Closed Captioning