He is one of the most prolific inventors of the 20th century--and the man that actually electrified the world. See more in Season 8, Episode 6, "The Tesla Experiment." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Scientists cannot say with absolute certainty where the moon came from. See more in this scene from Season 1, Episode 6, "Mysteries of the Outer Realms." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...