The Roswell Incident of 1947 is widely considered the coverup for a UFO. Officially, the U.S. military claimed a “flying disc” had crashed near Roswell, New Mexico, only to retract it, insisting it was a weather balloon. True believers, however, know that an alien spacecraft went down, complete with non-human bodies and indestructible debris, which was swiftly whisked away to Area 51 for reverse-engineering. Eyewitnesses described strange metal fragments, hieroglyph-like markings, and objects that defied known physics, fueling decades of speculation that the government has been secretly studying alien technology ever since.