Are these petroglyphs proof that Earth has been visited by extraterrestrials?! See more in Season 19, Episode 20, "The Top Ten Alien Petroglyphs." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

In many cultures, the power of the spoken word can activate energy in a talisman. See more in Season 19, Episode 18, "The Power of the Talisman." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

Ancient Astronaut theorists propose these sites are remnants of a lost extraterrestrial electrical system--one erected to draw energy from the Earth. See more in this clip from Season 1, Episode 8, Energy Lines And Hot Spots. Watch your favorite episodes of Ancient Aliens on The HISTORY ...

Did Tesla predict the future of technology? See more in this compilation from Ancient Aliens. 00:00 Cambridge, MA 06:29 Colorado Springs 13:10 Singapore Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe ...

A possible black hole is created during a Menlo Park experiment. See more in this scene from Season 1, Episode 8, "Energy Lines and Hot Spots." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

Is there evidence of extraterrestrial technology existing on our planet? See more in this compilation from Ancient Aliens. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and ...

This information about alien life on distant planets may surprise you. See more in this compilation 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. ...

Something is penetrating the sophisticated air defense network. See more in this scene from Season 2, Episode 1, "Unidentified Aerial Phenomena." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

Destruction will rain down on our planet. Who will be prepared? See more in this compilation from Ancient Aliens. 00:00 Doomsday Vault 05:29 Book of Revelation 11:26 Aliens Descended from Humans Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at ...

The truth is coming out about Roswell. See more in this scene from Season 2, Episode 2, "Extraterrestrial Informants." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other ...

Bob Lazar reveals information about Area 51. See more in this scene from Season 2, Episode 2, "Extraterrestrial Informants." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and ...

Meteor impacts, cosmic microbes, and space viruses have significantly impacted life as we know it. See more in this scene from Season 2, Episode 3, "Interstellar Fallout". Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...