Roswell, New Mexico hides dark interstellar secrets. Uncover the truth 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 ...

Did aliens really help to shape our history? See more in this two hour marathon 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 ...

If ancient aliens visited Earth, who were they, and where did they come from? Possible historic evidence and beliefs are examined around the world. See more in Season 1, Episode 2, "The Visitors." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

If ancient aliens visited Earth, what was their legacy, and did they leave behind clues that exist in plain sight such as sophisticated aircraft, complex electrical grids, and intricate construction machinery? See more in Season 1, Episode 1, "The Evidence." Watch all new episodes of Ancient ...

There is evidence that suggests we experienced 20th century alien contact. In 1942, the Battle of Los Angeles involved the US military and Air Defense allegedly fighting a UFO. See more in Season 1, Episode 5, "The Return." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up ...

Has NASA found definitive signs of life on Mars that they're intentionally keeping from the public? See more 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 ...

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979? See more in this scene from Season 4, Episode 15, "Classic UFO, Headless Zombie Fish, and Crying Virgin Mary." Watch all new episodes of The Proof Is Out There, Fridays at 10/9c, and stay up to date on all of your favorite ...

Are we truly alone, or have extraterrestrials been guiding us all along? Learn more in this full episode marathon of "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 ...

With infrared satellite technology, many believe we have found pyramids beneath the surface of the earth, launching an age of discovery that could rewrite history. See more in Season 1, Episode 16, "Aliens & Pyramids." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to ...

Dive into the ultimate exploration of humanity's greatest mysteries! Could the legendary powers of ancient gods and today's super-heroes be rooted in alien technology? Find out in this full episode marathon of "Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay ...

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We revisit some of the most advanced civilizations the world has seen and their extraterrestrial connections in this three hour marathon 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 ...