Ancient Astronaut Theorists believe mysterious geoglyphs discovered in Peru act as a supercomplex to connect different civilizations, in this clip from Season 17, "The Lost City of Peru." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

Ancient Astronaut Theorists believe the Hieroglyphics Stairway located in western Honduras chronicles Maya rulers communication with extraterrestrials, in this clip from Season 4, "The Mayan Conspiracy." Watch all new episodes of Ancient Aliens, returning Friday, August 6 at 9/8c, and stay up to ...

In the ancient city of Mecca, Muhammad is believed to have been a messenger sent by God himself, and with the help of angels, he was able to travel to other dimensions, in this clip from Season 5, "Strange Abductions." Watch all new episodes of Ancient Aliens, returning Friday, August 6 at 9/8c, ...

After the discovery of human remains found in Viking longships, Ancient Astronaut Theorists believe Valhalla could be an extraterrestrial space craft carrying the deceased, in this clip from Season 5, "The Viking Gods Watch all new episodes of Ancient Aliens, returning soon, and stay up to date ...

Watch all new episodes of The Proof Is Out There, returning soon, and stay up to date on all of your favorite The HISTORY Channel shows at http://history.com/schedule. Speculations arise after NASA releases a picture of the moon's craters that many believe to be created by an ancient ...

The team conducts an underground experiment to measure the conductivity at Homestead 2, and the results are startling, in this clip from Season 2, "Shocking Revelations." Watch all new episodes of The Secret of Skinwalker Ranch, Tuesdays at 9/8c, and stay up to date on all of your favorite The ...

Vitrified fortifications found in Scotland have been called evidence that death rays were in use in ancient times. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

History as we know it will change forever with the premiere of Ancient Aliens on April 10th at 9/8c on HISTORY. Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: ...

Don't miss the return of Ancient Aliens on Friday, April 10th at 9/8c on HISTORY. Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: http://po.st/AncientAliens Check out ...

Watch the new season of Ancient Aliens this summer starting Friday, July 24th at 9/8c on HISTORY. "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Watch the new season of Ancient Aliens this summer, Fridays at 9/8c on HISTORY. Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: http://po.st/AncientAliens Check out ...

Experts discuss the elaborate Inca road system in South America and the possibility that it might have existed thousands of years before the Inca themselves in this scene from "Aliens B.C". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...