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PBS Space Time
What if Humans Are Not Earth's First Civilization?
Season 9
Episode 32
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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13:25
Why has a newly discovered a black hole started pointing directly at us?
15:57
There’s a hard limit to humanity’s expansion in the universe. So, how big can we get?
16:49
Let’s figure out the absolute limit of our future view of the universe!
16:34
Let see if Black Holes and Dark Energy are the same thing!
16:28
Physics is the business of figuring out the structure of the world. So are our brains.
18:58
Does the next level of physics require us to do away with space and time?
14:28
Nuclei are held together by a quirk of nature, without which there’d be nothing.
16:29
Your motion through the universe is extremely complicated, so let’s figure it out!
14:47
Could there silicon-based life beyond Earth?
17:33
If you believe the Mathematical Universe Hypothesis then yes. And so are you.
15:32
Learn more about the time when the moon didn’t exist, and then hours later suddenly did.
15:19
We explore Supercritical Fluids and how being "in the between" is their superpower.