Ancient Aliens is an American television series that explores the pseudoscientific ancient astronauts hypothesis, as well as other pseudoscientific and psuedohistoric topics such as advanced ancient civilizations, extraterrestrial contact and ufology, and alleged conspiracy theories, in a non-critical documentary format. Episodes begin and end with rhetorical questions which frame the explored topics. The series has aired on History and other A&E Networks since 2010, and has been a target for criticism of History's channel drift, and criticism for promoting unorthodox or unproven hypotheses as fact. All episodes are narrated by Robert Clotworthy. The series is produced by Prometheus Entertainment.
The series began as a two-hour documentary special in 2009 and continued for three seasons as a flagship series on History. Seasons 4 to 7 aired on H2, with frequent re-airings of episodes on History and other A&E services. In 2015, the series returned to History after H2 was relaunched as Vice on TV. Season 15 premiered in 2020. The series continued with its sixteenth season in November 2020. 781b155fdc