There is a stone platform underneath ancient Greek and Roman ruins that ancient astronaut theorists believe was used as a platform to launch extraterrestrial aircraft in this clip from Season 8, "Mysterious Structures". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Investigate the mysterious tomb known as KV55 - and how the Egyptians tried to erase its occupant from history in this digital exclusive from Ancient Aliens, Season 12. #AncientAliens Subscribe for more from Ancient Aliens ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Ancient astronaut theorists believe the Greek mythological story of Poseidon was really a metaphor for an extraterrestrial event where mutinous aliens were expelled from the mothership in this clip from Season 8, "Faces of ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Stories about supernatural beings known as Jinn, or genie, in Islamic folklore are linked to an ancient astronaut theory about ultra-terrestrials that walk among us undetected in this clip from Season 8, Episode 4, "Faces ...

The search continues with new episodes of In Search Of Fridays at 10/9c! A compelling thought experiment proposes that dinosaurs could have evolved into humanoid beings and continue to roam the earth today in this clip from Season 8, "The Reptilians". #AncientAliens Subscribe for more from ...

The search continues with new episodes of In Search Of Fridays at 10/9c! After being contacted by the angel Moroni, Joseph Smith, Jr. founded the LDS Church. Ancient Astronaut Theorists suggest that the angel who spoke to Smith may have actually been an extraterrestrial in this clip from Season ...

The search continues with new episodes of In Search Of Fridays at 10/9c! In an ancient shipwreck, archeologists discovered the oldest mechanical computer ever found. Ancient Astronaut Theorists suggest this may be evidence of alien communication with Ancient Greece in this scene from Season 10, ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Ancient Astronaut Theorists believe that crop circles could be attempts by extraterrestrials to communicate with humans. Discover what messages could be hidden in these geometric patterns in this clip from Season 10, ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Ancient Astronaut Theorists believe that Earth's Van Allen radiation belt could actually be advanced extraterrestrial technology designed to protect us from hostile alien weapons, in this scene from Season 10, "The Alien ...

The search continues with new episodes of In Search Of Fridays at 10/9c! Are aliens using crop circles as a portal to travel through time? Ancient astronaut theorists say yes in this clip from Season 10, "Circles From the Sky". #AncientAliens Subscribe for more from Ancient Aliens and other ...

Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule An ancient Babylonian story about three wise who were sent through a firey furnace leads ancient astronaut theorists to suggest there is a star gate in Iraq in this clip from Season 10, "The Forbidden Zones." ...

Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule According to ancient astronaut theory, the origins of Osiris, Egypt's Lord of the Underworld, may be hidden under a sacred sight in Abydos, Egypt in this clip from Season 10, "The Forbidden Zones". #AncientAliens ...