The mission of aliens and evidence that may hold the clues are explored. Included: Sumerian tablets describing aliens who came to Earth to mine for gold; Egyptian hieroglyphs; and crop circles.
A possible connection between Bigfoot and aliens is examined.
Examining a theory that extraterrestrials were responsible for the intelligence of historical geniuses.
Examining author Erich von Däniken's controversial theories about alien life.
Prehistoric artwork found in India is examined in the Season 8 premiere.
A theory linking human technology to aliens is examined.
Examining a theory that inventor Nikola Tesla communicated with extraterrestrials.
A potential link between aliens and reptilian creatures depicted in ancient texts is examined in the Season 7 premiere.
A look at purported dark forces.
A look at forbidden sites that house ancient artifacts, relics, sacred texts and irreplaceable records.
Season 10 opens with a study of possible pyramids in Antarctica.
A look at the possibility that Wernher von Braun had extraterrestrial assistance with his aerospace creations.
Exploring a theory that alleged prophets communicated with extraterrestrials throughout history.
Examining a potential link between the Orion constellation and alien visits to Earth.
A theory crediting advancements in human civilization to ancient gods is examined.
A possible connection between aliens and plagues and epidemics is explored. Also: the possibility of microscopic aliens.
A theory linking the Great Sphinx in Giza, Egypt, to aliens is examined.
An investigation into whether the U.S. has a secret space program that could be preparing for war with other nations or other species.
Examining a possible link between extraterrestrials and strange items and writings that have been found in ancient tombs around the world.
Examining early evidence of aliens and the influence of the supposed visitors. Included: Hopi and Zuni costumes; Chinese legends that could be about a spacecraft.
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