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Why is NASA so worried about space microbes? How much damage could an extra-terrestrial microorganism do here on Earth? And if we aren't careful, how would we wipe out life on other planets?

00:00 The Biggest Problem With Space Exploration
01:24 Contaminations
01:51 Panspermia
02:30 Partner
04:02 Tesla in Space
06:20 Finding Life on Mars


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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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