The Sumerians in ancient Mesopotamia achieved over one hundred "firsts" for human civilization. Advances in writing, agriculture, science, mathematics, medicine, astronomy, transportation, building, military, schools and city planning, all originated in Sumer. See more in this marathon from ...

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 ...

Are these ancient signs alien connections, or mere coincidences? See more in this compilation from Ancient Aliens. 00:00 The Shiva Linga of India 05:33 Indian Gods Descend from the Sky 09:59 Surgeon Receives Medical Powers from Mystic Beings 13:08 Sacred Statue Reveals Alien Connection Watch ...

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 ...

Could today's rituals, such as festivals, coronations and funerals, be based on early man's attempts to emulate ancient alien visitors? See more in this scene from Season 3, Episode 5, "Aliens and Mysterious Rituals." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to ...

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." #AncientAliens Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to ...

Ancient Astronaut Theorists believe that Caral-Supe was once a thriving civilization that might’ve received help from extraterrestrials, in this clip from Season 17, "The Lost City of Peru." #AncientAliens Watch all new episodes of Ancient Aliens, returning September 17 at 9/8c, and stay up to ...

This mysterious tool was found 30 feet in the ground and has a significant patina, evidence that it's quite ancient. Yet it seems to be made of aluminum, which was not invented back then. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

At the British Royal Navy's Corsham Computer Centre in Wiltshire, UK, could they be continuing extraterrestrial investigations originally begun at Rudloe Manor? #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more ...

Rendlesham Forest, about 200 miles east of Rudloe Manor, is considered the site of England's most incredible UFO encounter. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes ...

Many ancient structures the world over, located far from one another, have similar designs, such as two stones strengthened with metal. Ancient astronaut theorists believe this is no coincidence. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

The coordinates of the Great Pyramid reflect the same number as the speed of light while many ancient structures are aligned with constellations. Is this evidence of alien design? #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...