Watch all new episodes of Ancient Aliens returning Saturday, April 11th at 9/8c, and stay up to date on all of your favorite History Channel shows at https://history.com/schedule.

Ancient Astronaut Theorists believe the government is reverse engineering element 115, a substance recovered from an alien craft with the capability to accelerate humanity to a new level, in this clip from Season 14, "Element 115." #AncientAliens
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