Now in it’s 11th season, Ancient Aliens is an American television documentary series that premiered on April 20, 2010 on the History channel. Produced by Prometheus Entertainment, the program presents hypotheses of ancient astronauts and proposes that historical texts, archaeology, and legends contain evidence of past human-extraterrestrial contact.

Giorgio A. Tsoukalos (Greek: Γε?ργιος Α. Τσο?καλος; born March 14, 1978) is a Swiss-born Greek-Austrian writer and television personality. He is a proponent of the idea that ancient alien astronauts interacted with ancient humans. He is the Chairman and co-founder of Legendary Times magazine.