Watch HDToday. Jack Parsons: Jet Propelled Antichrist is a story about one of the fathers of modern rocketry and a founder of the Jet Propulsion Laboratory (JPL) which as part of NASA still leads the way in the development of rockets and the exploration of space. He was also an occultist, a sorcerer and a magus. The infamous magician Aleister Crowley the self-proclaimed Great Beast called him son. He called himself ‘The Antichrist’ and was repeatedly investigated by the FBI. At the age of 38 Parsons died in a mysterious explosion that made headlines around the US. Officially it was a tragic scientific accident — other interpretations of the event persist to this day.