Sacred tales of the ancient world may provide new clues to the oldest records of time travel ever experienced, 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 favorite The HISTORY Channel shows at ...

Scientists at Cornell University come across evidence of multiple advanced extraterrestrial civilizations after analyzing a map of the Milky Way, in this clip from Season 3, "Apocalypse When?" Watch all new episodes of The UnXplained, Fridays at 8/7c, and stay up to date on all of your ...

Could Leonardo da Vinci’s mysterious disappearance be evidence of an alien encounter? Uncover more in this clip from Season 4, "The Da Vinci Conspiracy." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Ancient Astronaut Theorists believe there are hidden alien messages in Leonardo Da Vinci’s famous painting - The Mona Lisa. Discover more in this clip from Season 4, "The Da Vinci Conspiracy." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite ...

Ancient astronaut theorists believe that extraterrestrial interference might have impacted the way humans evolved, in this clip from Season 4, "Aliens and Bigfoot." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY Channel shows ...

In this clip from a 1994 episode of "The Oprah Show", guest Peter Faust claims he was visited—and ultimately abducted—by aliens at the age of 8. As an adult, Peter says he’s had terrifying recollections of the abduction, which left him so unsettled he ultimately sought the help of a ...

According to ancient Mesopotamia texts, the Epic of Gilgamesh tells the tale of a giant creature of extraterrestrial origins, in this clip from Season 4, "Aliens and Bigfoot." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY ...

Not everything is as it seems in Wichita, Kansas. An eyewitness spots a strange object in the sky, in this clip from Season 2, "Wichita UFO & Booming Sea Sound." 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 ...

On September 12th, 1991, NASA captured strange extraterrestrial activity but has since kept it hidden, in this clip from Season 4, "The Nasa Connection." Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Eyewitness video taken in England shows a strange orb splitting multiple times in the sky. Experts examine this footage for answers, in this clip from Season 2, "Sasquatch Sounds & Undersea Alien." Watch all new episodes of The Proof Is Out There, Fridays at 10/9c, and stay up to date on all ...

Off the coast of Cornwall, a glowing orb has been spotted flying at supernatural speeds, in this scene from Season 2, "Alaskan Sea Monster & Mystery Jungle Jet." 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 ...

Ancient astronaut theories believe that the tsunami of Crete in 365 AD could’ve been caused by an ancient god known as Poseidon, in this clip from Season 4, "Aliens and Mega-Disasters." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite The ...