Could these artifacts really have extraterrestrial origins? See more in this compilation from Ancient Aliens!

00:00 Impossible Artifacts Possess an Extraterrestrial Connection
02:12 Mysterious 2,000YearOld Skull Linked to Alien Life
07:40 Ancient Artifacts Extraterrestrial Origins
11:08 Ancient Nanostructures

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

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