The "Roswell incident", or simply "Roswell", was the July 1947 recovery of metallic and rubber debris from a military balloon by Roswell Army Air Field personnel, who issued a press release announcing possession of a "flying disc". Decades later, conspiracy theories claimed that debris from an alien spaceship had been covered up by the government. In response, in 1994 the United States Air Force published a report concluding the crashed object was a top secret nuclear test surveillance balloon from Project Mogul.
The Roswell incident took place during the flying disc craze of 1947, sparked by widespread media coverage of pilot Kenneth Arnold's alleged sighting. Amid hundreds of reports nationwide, on July 8, 1947, Roswell Army Air Field's press release was broadcast via wire transmission. The Army quickly retracted the release, falsely stating the crashed object was merely a conventional weather balloon.
The incident was forgotten until 1978, when retired lieutenant colonel Jesse Marcel was interviewed by ufologist Stanton Friedman. In that interview, Marcel revealed the "weather balloon" had been a cover story to divert public attention. Based on this, Marcel speculated that the debris might have been extraterrestrial in origin.
Jesse Marcel's interview led to complex conspiracy theories about alien spacecraft recovery and military cover-ups by ufologists. In 1979, over three decades after Roswell, conspiracy theorists began to claim that extraterrestrial occupants had been recovered by the military at Roswell. In response to claims of alien occupants, a second USAF report in 1997 reviewed testimonies about aliens and found them to be baseless, made up, or inspired by parachute dummies.
Conspiracy theories about the event persist despite explanations linking the incident to Project Mogul, a military balloon or having been described as "the world's most famous, most exhaustively investigated, and most thoroughly debunked UFO claim". Its myth has become a cultural phenomenon and the Roswell incident continues to be of interest in popular media.