Tune in to Alien Invasion Week on History starting Monday 9/30 through Friday 10/4 for new Ancient Aliens, plus the premiere of In Search Of, new UFO Specials and More! There is a mountain in western Tibet that Ancient Astronaut Theorists believe could be a nuclear power plant used by aliens as ...

Tune in to Alien Invasion Week on History starting Monday 9/30 through Friday 10/4 for new Ancient Aliens, plus the premiere of In Search Of, new UFO Specials and More! Although mainstream scholars often dismiss the evidence, Ancient Astronaut Theorists believe the Ark of the Covenant could be ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Recent military technology mirrors Tesla's concept of a death ray. Ancient Astronaut Theorists believe this could be proof that Tesla was capable of seeing into the future, in this scene from Season 8, "The Tesla ...

Watch all new episodes of Ancient Aliens returning soon, and stay up to date on all of your favorite History Channel shows at https://history.com/schedule. Ancient Astronaut Theorists believe the Star Visitor Sanctuary in Hawaii is a welcome spot for extraterrestrial civilizations who have ...