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 ...

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. See more in this scene from Season 20, Episode 18, "The Linda Moulton Howe Files." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all ...

Enjoy these cameos of the Lagina brothers 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 http://history.com/schedule. #AncientAliens Subscribe for more ...

Throughout history, advances in technology have led to the development of powerful weapons--each more deadly than the last. See more in Season 2, Episode 13, "Alien Weapons." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The ...

Is it possible that the perfectly carved stone boxes--each weighing more than 70 tons--were designed not by humans... but by otherworldly visitors? See more in this scene from Season 20, Episode 17, "Egypt's Giant Tombs." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up ...

Will anyone be able to solve the mystery of the Bermuda Triangle? 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 http://history.com/schedule. ...

Ancient Astronaut Theorists believe humans didn't evolve on earth. See more in this clip from Aliens and Human Evolution. 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. ...

Ancient Astronaut Theorists proposed a notion that the human race originated on Mars, and our journeys into space could be leading us towards a return to our ancestral homeland, in this clip from Season 16, "The Space Travelers." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and ...

Tattoos, piercings, and body modification account for a nearly one-billion-dollar industry. See more in Season 14, Episode 19, "Human Hieroglyphs." 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 ...

Archaeologists uncover evidence of the burial of an early Egyptian god, in this clip from Season 20, "Egypt's Giant Tombs." 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 ...

Be warned: these 4 stories of alien abductions will absolutely terrify you, 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. ...

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. See more in this scene from Ancient Aliens Season 20, Episode 18, "The Linda Moulton Howe Files." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up ...