Throughout the ancient world, structures were built to mirror the constellations in the night sky--and, in most cases, this is only apparent when they are viewed from high above the Earth. See more in Season 14, Episode 13, "The Constellation Code." Watch all new episodes of Ancient Aliens, ...

In 1952 cameras spotted UFOs flying over the White House lawn in Washington D.C. - these sightings eventually lead to Project Blue Book, created by the U.S. government, in this clip from Season 5, "Aliens and Cover-Ups." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to ...

Did aliens from the tiny star Sirius B visit humans in the distant past, imparting the knowledge of civilization to peoples thousands of miles apart? See more in Season 14, Episode 4, "The Star Gods of Sirius." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on ...

Are these ancient stone structures actually harnessing energy from our planet? 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 ...

The native Hawaiians trace their ancestry to beings from the Pleiades star system called the Akua. See more in Season 14, Episode 12, "Islands of Fire." 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 ...

Are extraterrestrials altering human DNA and repopulating the Earth with alien/human hybrids? See more in Season 14, Episode 10, "Project Hybrid." 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 ...

Could an exotic super heavy element provide the key to humanity's future in the stars? See more in Season 14, Episode 3, "Element 115." 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 ...

Could paranormal activity be explained by beings entering our world from other dimensions? See more in Season 14, Episode 11, "The Trans-Dimensionals." 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 ...

Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. See more in Season 5, Episode 3, "Alien Power Plants." 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 ...

Through an incredible technological breakthrough, experts have discovered everlasting synthetic DNA found in rare artifacts, in this clip from Season 15, "Impossible Artifacts." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The ...

Satellite images have revealed a giant face that appears to be carved into the Earth in Alberta, Canada, which has now become known far and wide as "The Badlands Guardian." See more in Season 14, Episode 2, "The Badlands Guardian." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and ...

Explore the enigmatic megalithic stones of Puma Punku, a site that has baffled archaeologists for centuries. Discover the secrets behind these massive, precisely cut stones and delve into the mysteries of this ancient Bolivian wonder. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, ...