Do we know everything NASA knows about potential life in outer space? Check out this compilation from Ancient Aliens.

00:00 NASA’s Untold Extraterrestrial Encounter
05:02 NASA's Extraterrestrial Technology
10:02 Evidence of Alien Wars on Dwarf Planet
13:20 Is There Life on Mars?

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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.

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