Ancient Aliens (2009– ) Episode List. Current Episode (aired 6 Sep. 2019) The Nuclear Agenda. Ever since the first atomic bomb was detonated in 1945, UFOs have been reported at nuclear facilities all over the world. Is it possible that extraterrestrials are monitoring humanity's nuclear capabilities? Explore the possibility that ancient aliens shaped our distant past in Ancient Aliens® Season 8 on HISTORY®. Could stories from ancient myths and sacred texts.