Unlock the secrets of ancient wisdom and enigmatic civilization 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 ...

Ancient Astronaut Theorists have found compelling similarities between Mount Shasta and the Great Pyramid that explain the purpose they've served, in this clip from Season 17, "The Mystery of Mount Shasta." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all ...

Some of these petroglyphs make experts wonder if they were created because of extraterrestrials. See more in this scene from Season 1, Episode 12, "The Global Connection." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The ...

How did these hieroglyphics end up in Australia? See more in this scene from Season 1, Episode 12, "The Global Connection." 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 ...

Unravel the mystery of crop circles, from time travel to secret messages 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. ...

Across the globe, there are remarkable ruins, statues and carvings that appear to connect diverse ancient civilizations to one another. See more in Season 1, Episode 12, "The Global Connection." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

Could the legends of these strange visitors from the stars be more than mere mythology? See more in this scene from Season 1, Episode 13, "Strange Visitors." 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 ...

Throughout history, there have been stories of flying serpents and fire-breathing dragons that descended from the sky, cross-cultural tales of the star ancestors that jumpstarted civilization on Earth, and even ancient lore describing otherworldly beings that interacted with humans in the ...

Uncover the secrets of the skulls with us 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 Subscribe for more ...

Could the legends of these strange visitors from the stars be more than mere mythology? See more in this scene from Season 1, Episode 13, "Strange Visitors." 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 ...

Would it have been physically possible for the ancient Egyptians to build the pyramids? 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 Subscribe for ...

From alleged alien bases to perplexing anomalies, join us as we probe the secrets hidden within the moon's shadowy landscape 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 ...