Ancient Aliens: Humankind's RETURN to Mars (Season 16) | History

Ancient Astronaut Theorists proposed a notion that the human race originated on Mars, and our journeys into space could be leading us towards a return to our ancestral homeland, in this clip from Season 16, "The Space Travelers."

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

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