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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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18:26
Learn about Nobel laureate Roger Penrose's idea of how consciousness is caused by quantum processes.

16:28
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20:07
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16:11
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17:25
So you’ve decided to jump into a black hole...

12:51
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13:28
Black hole complementarity may force us to rethink what it means to say that it exists.

20:15
To travel the stars without faster than light travel we’re going to need a generation ship.

16:19
Today we are jumping into a black hole. Again.

15:36
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15:07
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15:02
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