From the secrets of a lost global empire to the mystery of a hollow, artificial Moon — and Russia’s hidden UFO files — Ancient Aliens investigates whether humanity’s greatest mysteries are tied to visitors from beyond the stars. See more in this Ancient Aliens marathon.
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“Ancient Aliens” explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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Uncovering Earth’s Greatest UFO Secrets *Marathon* | Ancient Aliens | History
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