The ancient Maya were master stonemasons, creating intricate temples and pyramids that have baffled archaeologists for centuries. Could aliens have helped them build these massive structures? Source

Stories of strange encounters accompany many of history's major events. Is it merely coincidence? Or might it be evidence of extraterrestrial intervention? See more in Season 8, Episode 4, "Alien Encounters." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The ...

Were these mysterious ancient structures built by giants? See more in this scene from Season 19, Episode 3, "Mystery of the Lost Civilization." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Billionaire establishes a grant for one of the largest studies of crop circles in history. See more in this scene from Season 19, Episode 2, "The Crop Circle Code." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at ...

Did civilization exist 12,000 years ago? See more in this scene from Season 19, Episode 3, "Mystery of the Lost Civilization." 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 ...

In cultures throughout the world, there are tales of intimate encounters with otherworldly beings. But could these stories be more than just mythology? See more in Season 7, Episode 8, "Alien Breeders." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY ...

On New Year's Eve, 1982, several witnesses claim they saw UFO's in the sky, in this scene from Season 19, Episode 1, "UFO Hotspots." 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 ...

Throughout history, spiritual leaders known as shamans have healed, protected and advised their people. But are they simply putting on elaborate ceremonies? See more in Season 7, Episode 6, "The Shamans" Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY ...

These mysterious formations have been appearing in farmer's fields for centuries. See more in this scene from Season 19, Episode 2, "The Crop Circle Code." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Earth is home to 10 quintillion insects. In cultures throughout the world, insects have been honored, feared and even revered as gods. See more in Season 7, Episode 7, "Aliens and Insects." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website ...

Throughout human history, the planet Mars has captured our imagination. Ancient Egyptian astronomers were the first to record the red planet on a chart of the cosmos known as the Senenmut star map, in Season 7, Episode 5, "Aliens and the Red Planet." Watch all new episodes of Ancient Aliens, ...

In 2017, scientists in Hawaii detected a strange object traveling through our solar system. See more in this scene from Season 6, Episode 1, "Aliens and Outer Space." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at ...