During a major excavation, the Knight Templar uncover a secret chamber, in this clip from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 8/7c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

Ancient Astronaut Theorists believe that Pharaoh Seti’s lost temple actually served as a Stargate to travel from portal to portal. See more in this clip from Season 18, "Return of the Egyptian Gods." Watch all new episodes of Ancient Aliens, Fridays at 8/7c, and next day on The HISTORY Channel ...

Do the stories in the Bible and other sacred texts speak of Gods or Extraterrestrials? The history of the human race and our true origins of where we come from can be traced back through archeology and a careful study of our past. Learn of a time when there were “Giants upon the Earth” and see ...

A new subterranean realm is discovered deep in the caves of Vietnam, in this clip from Season 18, "Secrets of Inner Earth." Watch all new episodes of Ancient Aliens, Fridays at 8/7c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

Ancient Astronaut Theorists believe that the long lost Ark of the Covenant contained extraterrestrial powers much too powerful for mankind, in this clip from Season 18, "Recovering the Ark of the Covenant." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY ...

During an Arctic expedition, naval officer Richard Burn makes a very unusual discovery, in this clip from Season 18, "Secrets of Inner Earth." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Ancient Astronaut Theorists believe that The Great Flood happened across the world and was genetically engineered by aliens, in this clip from Season 18, "Journey to Immortality." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at ...

Cameras catch a strange Unidentified Ariel Vehicle (UAV) flying above the California skies, in this Ancient Aliens clip. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

A museum in England is home to an ancient Sumerian text that reveals unbelievable secrets, in this clip from Season 18, "Journey to Immortality." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Ancient Astronaut Theorists believe "The Shining Ones" used magical powers stemming from extraterrestrials, in this clip from Season 18, "The Shining Ones." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Ancient Astronaut Theorists conduct an experiment in the Blackcomb Glacier Ice Cave to locate signs of extraterrestrial life, in this clip from Season 18, "Ancient Aliens On Location: Evidence of Alien Life." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The ...

Ancient Astronaut Theorists believe that Prince William might’ve investigated and researched a classified UFO phenomenon, in this clip from Season 18, "The World on Alert." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at ...