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PBS Space Time
What If Alien Life Were Silcon-Based?
Season 9
Episode 3
Life as we know it is carbon-based, but does it have to be this way? There’s another element on the periodic table that shares some of the key properties of carbon but is far more abundant on most planets. I’m talking about silicon. So is there silicon-based life out there?
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12:41
Does gravity require extra dimensions?

14:21
This is a map of the multiverse.

13:52
How Luminiferous Aether led to Relativity.

14:01
How do you learn the age of the universe when there’s no trace left of its beginnings?

14:31
When do we get to wormhole ourselves out of here?

13:31
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13:38
How can we be sure about timescales so far beyond the capacity for human intuition?

11:54
Normal maps are useless inside black holes.

12:49
If there’s one thing cooler than a black hole it’s a rotating black hole.

14:42
How do quantum states manifest in the classical world?

11:31
If the quantum multiverse is real there may be a version of you that lives forever.

15:09
Does conscious observation of a quantum system cause the wavefunction to collapse?