These UFO sightings are indescribable. See more in this compilation from Ancient Aliens. 00:00 Roswell Crash 05:36 UFO in San Diego 09:40 Declassified Videos 13:18 UAP's Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

Are complex energy waves moving society along by creating visions in our heads?! See more in this scene from Season 1, Episode 9, "Aliens and the Superhuman Mind." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Check out these 4 mind-blowing theories about Stonehenge, in this compilation from Ancient Aliens. 00:00 - Extraterrestrial Communication at Stonehenge 03:08 - The Purpose of Stonehenge 07:02 - The Mysterious History of Stonehenge 11:00 - Was Stonehenge Built by GIANTS?! Watch your favorite ...

Edgar Cayce prophesied that Atlantis once existed and might be connected to the Sphinx. See more in Season 19, Episode 15, "Edgar Cayce: The Sleeping Prophet." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

The brain is the last untamed beast in the universe. See more in Season 1, Episode 9, "Aliens and the Superhuman Mind." 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 ...

Could this pyramid have been built to greet extraterrestrial visitors? 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 ...

Do alien hybrids walk among us on Earth? 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 other great The HISTORY Channel ...

Were Delphi's powers real? See more in this clip from Season 19, Episode 16, "The Gods of Greece." 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 ...

These underground offices are studying the power coming from a pyramid in Alaska. 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 ...

What should we make of these international UFO sightings? See more in this compilation from The Proof Is Out There. Watch all new episodes of The Proof Is Out There, Fridays at 10/9c, and stay up to date on all of your favorite The HISTORY Channel shows at http://history.com/schedule. If ...

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: ...

Many people believe that there are extraterrestrial reptilian humanoids that have been spotted on Earth. See more in this compilation from Ancient Aliens. 00:00 Reptilian-Human Hybrid 03:49 Reptilian Statues 10:23 Patient with Reptilian Heart Watch your favorite episodes of Ancient Aliens on ...