The Ark of the Covenant is one of the most sought after religious relics of all times and far more than just a box that contained the Ten Commandments. See more in Season 6, Episode 10, "Aliens and the Lost Ark." #AncientAliens Watch all new episodes of Ancient Aliens, Friday, January 6th, ...

Ronald Regan has a frightening encounter with an unidentified flying object next to his plane. See more in this clip from "Aliens and the United States." #AncientAliens Watch all new episodes of Ancient Aliens, Friday, January 6th, at 9/8c, and next day on The HISTORY Channel website at ...