Alien Power Plants (S5, E2) | Ancient Aliens

Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. In Season 5, Episode 2, "Alien Power Plants." Find out more about the show and watch full episodes on our site: "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions...

44 min - Space & the Universe - HISTORY

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