Could there be evidence to the atomic bomb actually existing thousands of years ago? See more in this scene from Season 2, Episode 8, "Aliens and Mysterious Texts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Are extraterrestrials responsible for this architectural knowledge? See more in this scene from Season 2, Episode 8, "Aliens and Mysterious Texts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more ...

Could extraterrestrials be keeping an eye on America? Find out in this Ancient Aliens compilation! Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY ...

Could this layer of ash found beneath the Earth's soil be evidence of a major global event? See more in this scene from Season 2, Episode 8, "Aliens and Mysterious Texts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

Prominent world leaders including the British Royal Family, Japan's Defense Minister, the Chinese government, and Russia's former president have allegedly been investigating Unidentified Aerial Phenomena (UAPs) for years. Learn more in this scene from Season 2, Episode 9, "Aliens and World ...

The French government releases information regarding Unidentified Aerial Phenomena to the public. See more in this scene from Season 2, Episode 9, "Aliens and World Leaders." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

Unidentified air conditions in China shock civilians and government officials alike. See more in this scene from Season 2, Episode 9, "Aliens and World Leaders." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Prominent world leaders including the British Royal Family, Japan's Defense Minister, the Chinese government, and Russia's former president have allegedly been investigating Unidentified Aerial Phenomena (UAPs) for years. See more in this scene from Season 2, Episode 9, "Aliens and World ...

Across the globe, monumental stone figures silently bear witness to a forgotten era. See more in this scene from Season 2, Episode 10, "Alien Effigies." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for ...

More than 7,000 years ago, the ancient Sumerians established what is considered the world's first civilization, and they credited their extraordinary achievements to their gods, the Anunnaki. See more in this scene from Season 20, Episode 7, "Secrets of the Sumerians." Watch your favorite ...

Ancient Aliens is counting down the top ten most devastating disasters ever documented that might have an otherworldly connection. See more in this scene from Season 20, Episode 6, "The Top Ten Alien Disasters." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at ...

After hearing incredible testimony about a UFO crashing on Skinwalker Ranch many years ago, the team makes a shocking discovery inside the rocky Mesa. See more in this clip from Season 5, Episode 10, "What the Gel?" New episodes of The Secret of Skinwalker Ranch coming soon. Stay up to date on ...