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NASA’s Unexplained Files • SEASON 6 EPISODE 5

Aliens in the Amazon

NASA’s Unexplained FilesSeason 6Episode 5May 9, 201960 min

After Neil Armstrong's moonwalk, he led an expedition to the Amazon to find a legendary library that holds all knowledge of an advanced alien civilization. Experts ask if a close encounter on the moon's surface inspired Armstrong's mysterious quest.

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