Ancient Aliens: Area 51 Opens Up Portals (Season 20)
For thousands of years, cultures around the world have held a belief in stargates through which beings have traveled to Earth from distant points in the universe and even other dimensions. See more in this scene from Season 20, Episode 12, “Unlocking the Stargates.“
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“Ancient Aliens“ explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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