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PBS Space Time
Did Life on Earth Come from Space?
Season 5
Episode 4
How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let’s see what modern science has to say about the plausibility of panspermia.
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18:50
Does this also explain why there are no aliens?

16:58
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14:50
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16:30
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17:23
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15:58
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16:35
What if the Big Bang was just an endless cycle?

19:39
Why are billions suddenly being pumped into fusion startups?

16:36
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14:30
Maybe dark energy doesn't exist?

18:32
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15:35
What do you get if you combine something that’s infinitely massive and negative infinitely massive?