Bob Lazar (January 26, 1959) is an American conspiracy theorist. Claims to have been hired in the 1980s to reverse-engineer extraterrestrial technology at a secret site called "S-4". a secret facility inside Area 51. Bob claims he worked on an alien craft propelled by an antimatter reactor and powered by element 115, which at the time had not yet been synthesized but now called Moscovium. Possibly, the most influential UFO conspiracy theorist of all time.