Join us at AlienCon to see your favorite experts from Ancient Aliens! Some ancient astronaut theorists believe some science fiction writers - some of whose ideas became reality over time - were actually helped by extraterrestrials in this clip from Season 11, Episode 5, "The Visionaries ". ...

Different cultures and civilizations have used the symbol of the egg to represent new life. With these cultures being so different, some think that the symbolic egg may have come from extraterrestrial forces in this clip from Season 11, Episode 6, "Decoding The Cosmic Egg". #AncientAliens ...

Such distinctive landmarks as the 188-rock stone circle in New South Wales and Ayers Rock in central Australia are seen as indications by some that "sky spirits" were responsible in helping to start Australian civilization in this clip from Season 11, Episode 7, "The Wisdom Keepers". ...

Anthropologists have dated the Aboriginal people of Australia at 60,000 years, making it the world's oldest continuous culture, and their cave drawings of the Wandjina or "sky heroes" that are tens of thousands of years old can be found in the northwest Kimberley region in this clip from Season ...

In New South Wales, rock carvings reminiscent of ancient Egyptian hieroglyphics referred to as the "Gosford Glyphs" are believed by ancient astronaut theorists to include carvings of UFOs in this clip from Season 11, Episode 7, "The Wisdom Keepers". #AncientAliens Subscribe for more from Ancient ...

According to legend, the Nine Emperor Gods come from the nine stars that make up the Big Dipper in this clip from Season 11, Episode 8, "The Mysterious Nine". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more ...

Former Canadian Defense Minister, Paul Hellyer, urges government officials to reveal the "truth" that extraterrestrials have been overseeing Earth for some time now in this clip from Season 11, Episode 8, "The Mysterious Nine". #AncientAliens Subscribe for more from Ancient Aliens and other great ...

Archaeological discoveries in China dating back 4,000 years have many questioning if humans originated from an outside world in this clip from Season 11, Episode 9, "The Hidden Empire". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

An ancient city with advanced architectural features found at the bottom of Fuxian Lake - and that pre-dates the lake itself - has ancient astronaut theorists asking who built this city in this clip from Season 11, Episode 9, "The Hidden Empire". #AncientAliens Subscribe for more from Ancient ...

Ancient astronaut theorists claim that several UFO-related incidents in China over the years have led to the Chinese government's beginning to acknowledge that extraterrestrial life may exist in this clip from Season 11, Episode 9, "The Hidden Empire".#AncientAliens Subscribe for more from ...

Some archeologists claim that a lack of intelligence might not be the reason for Neanderthals' extinction in this clip from Season 11's episode, "The Prototypes". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out ...

There are some who believe that people with Rh-negative blood may have evolved from an extraterrestrial species in this clip from Season 11's episode, "The Prototypes". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find ...