Watch these unbelievable mysteries that took place in Peru, 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. #AncientAliens ...

From biblical patriarchs to modern day alien captives, throughout history, there have been people who claimed to have contact with otherworldly beings. And often bearing important messages for humanity. Could it be that they have been chosen to help carry out an extraterrestrial agenda? See ...

What if life on Earth began in outer space? See more in this special from Ancient Aliens, Season 1, Episode 99. 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. ...

The annual UFO sightings report, released jointly by the Pentagon and director of national intelligence, reveals that whilst no extraterrestrial evidence was found amongst over 700 new reports from the previous year, approximately two dozen cases remain particularly intriguing. #pentagon ...

Roswell, New Mexico hides dark interstellar secrets. Uncover the truth in this Ancient Aliens compilation. 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 ...

If ancient aliens visited Earth, who were they, and where did they come from? Possible historic evidence and beliefs are examined around the world. See more in Season 1, Episode 2, "The Visitors." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

Are these great Pharaohs and Gods from an extraterrestrial background? 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. ...

Advanced extraterrestrial civilizations may have altered the course of human history, challenging everything we know about our origins. This supernatural documentary dives into theories of alien influence on ancient civilizations, questioning accepted timelines and offering a bold reimagining ...

If ancient aliens visited Earth, what was their legacy, and did they leave behind clues that exist in plain sight such as sophisticated aircraft, complex electrical grids, and intricate construction machinery? See more in Season 1, Episode 1, "The Evidence." Watch all new episodes of Ancient ...

From biblical patriarchs to modern day alien abductees, throughout history, there have been people who claimed to have contact with otherworldly beings. And often bearing important messages for humanity. Could it be that they have been chosen to help carry out an extraterrestrial agenda? See ...

There is evidence that suggests we experienced 20th century alien contact. In 1942, the Battle of Los Angeles involved the US military and Air Defense allegedly fighting a UFO. See more in Season 1, Episode 5, "The Return." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up ...

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. See more in this scene from Season 20, Episode 18, "The Linda Moulton Howe Files." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all ...