In the 21st century, the search for extraterrestrial intelligence is ramping up like never before, with powerful new technologies allowing us to explore billions of stars across the universe. See more in this scene from Season 20, Episode 14, "The Search For Extraterrestrial Intelligence." ...

Why are humans so different from every other species on Earth? Did we evolve from ape--or is our intelligence the result of contact with an otherworldly source? See more in this 3 hour marathon from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date ...

Ancient myths of small gray beings with black oval eyes are uncovered. See more in this marathon from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. ...

Have extraterrestrial beings shaped our history? Discover the truth in this marathon from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Are UFOs disappearing inside volcanoes? See more in this #Short from Ancient Aliens. #AncientAliens "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. HISTORY® is the leading destination for award-winning original series and ...