Ancient Aliens is an American television series that premiered on April 20, 2010, on the History channel. Produced by Prometheus Entertainment in a documentary style, the program presents hypotheses of ancient astronauts and proposes that historical texts, archaeology, and legends contain evidence of past human-extraterrestrial contact. The executive producer of Ancient Aliens is Kevin Burns, who also directed and wrote the pilot episode. Giorgio A. Tsoukalos serves as consulting producer and appeared on screen in the pilot. Erich von Däniken appeared in the pilot episode, and UFO researcher C. Scott Littleton served as an expert consultant for the show until his death in 2010. Radio talk show host George Noory speaks in five episodes, including the pilot. Reverend Barry Downing, known for describing angels in the Bible as ancient astronauts, offered his viewpoints in the pilot episode. Psychologist Jonathan Young, who brings a mythological perspective, appears on screen in every episode but the first pilot. Alternate history author David Hatcher Childress speaks frequently in most episodes. wiki
On June 4, 2018 Jason Colavito tweeted that: "Researching a new article, I learned that @AncientAliens popularized the Nazi "time machine" from Joseph Farrell, who said in his book that he was inspired to write about it by Frank Joseph, the former head of America's Nazi Party. Why is it Nazis all the way down?" He later added: "@AncientAliens got it from David Childress, who got it from an author he published, Joseph Farrell, who borrowed it from Nick Cook, whose pseudonymous source (if he ever existed) made it up to explain the fake Polish report of the Nazi "Bell.""