17:53
PBS Space Time
What If There's A Black Hole Inside The Sun?
Is there a black hole hiding in the core of the Sun eating it from the inside out?
What if Humans Are Not Earth's First Civilization?
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.
What if Humans Are Not Earth's First Civilization?
Season 9 Episode 32 | 19m 19s | CC
We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we, really? The Silurian hypothesis, which asks whether pre-human industrial civilizations might have existed.
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