It is believed that the Knights Templar uncovered the Ark of the Covenant during an important excavation, in this clip from Season 8, "Recovering the Ark of the Covenant." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY Channel ...

After years of secrecy and denial of UFOs, Japan's government officials had a shift in policy and finally started acknowledging aerial phenomena, in this clip from Season 18, "The World on Alert." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

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 stay up to date on all of your favorite The HISTORY ...

Ancient Astronaut Theorists believe that extraterrestrials might've been crucial to the construction of Nan Madol, in this clip from Season 18, "Beneath the Sacred Temples." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

Ancient Astronaut Theorists believe that the colossal tower of Jupiter was erected by ancient sky gods, in this clip from Season 18, "Beneath the Sacred Temples." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Ancient Astronaut Theorists believe that the obelisk of Egypt was constructed to provide a profound connection to the gods, in this clip from Season 17, "Mystery Of the Standing Stones." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite The ...

A former Pentagon employee shares three groundbreaking declassified videos showing and a strange object with unusual flight characteristics, in this clip from Season 17, "The Disclosure Event." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

Ancient Astronaut Theorists believe that Garuda caused a brutal nuclear attack on a small town in southern Pakistan, in this clip from Season 3, "Aliens and Monsters." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY Channel ...

In Southern California, a lake known as “The Lake of the Devil” was home to a beast that frightened locals, see more in this clip from Season 3, "Aliens and the Old West". Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY Channel ...

Workers have uncovered a collection of stones depicting human encounters with dinosaurs in Ica, Peru, in this clip from Season 4, "Aliens and Dinosaurs". Watch all new episodes of Ancient Aliens, returning Friday, January 7 at 9/8c, and stay up to date on all of your favorite The HISTORY ...

65 million years ago, a giant asteroid caused dinosaurs to go extinct, and this extinction strangely correlates to the Mayans, in this clip from Season 4, "Aliens and Dinosaurs". Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY ...

A theoretical physicist at the University of Connecticut shares his prototype for a large time machine that extraterrestrials could’ve also used, in this clip from Season 4, "The Time Travelers." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your ...