More than 3,000 years ago, the ancient Greeks built an empire that is considered the birthplace of Western Civilization, and they credited their most monumental achievements to gods like Zeus, Apollo, and Poseidon. See more in this scene from Season 19, Episode 16, "The Gods of Greece." Watch ...

Where did all the people on Easter Island go? See more in Season 1, Episode 10, "Gone Without a Trace." 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 great The ...

A policeman witnesses alien activity. See more in this #Short 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 other great The HISTORY Channel shows: ...

Modern technology helps create a high resolution version of an old UFO photo. See more in this scene from Season 19, Episode 17, "The New UFO Hunters." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for ...

Is an alien assisting the U.S. government? 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 ...

Could the James Webb Space Telescope help us find alien life? See more in this scene from Season 19, "UFO Hunters." 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 ...

Might there be a connection between all these missing person cases--one possibly involving otherworldly portals and even extraterrestrial beings? See more in this scene from Season 1, Episode 10, "Gone Without a Trace." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel ...

Strange beings came out of the ground in the Zone of Silence. 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 ...

Most people who have been abducted don't remember a thing. See more in this clip from Season 1, Episode 10, Gone Without a Trace. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

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 ...