Cosmos: A Space-Time Odyssey

Season 1 Episode 7

The Clean Room

6
Aired Sunday 9:00 PM Apr 20, 2014 on FOX
8.9
out of 10
User Rating
27 votes

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Episode Summary

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The Clean Room
AIRED:
The tempestuous youth of the Earth effectively erased all traces of its beginnings. How did we ever learn its true age?

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