In July 1947, unusual debris was discovered on a ranch near Roswell, New Mexico. The U.S. Army initially announced that personnel from Roswell Army Air Field had recovered a “flying disc,” but the military soon changed its explanation and identified the debris as coming from a weather balloon. The incident later became the subject of renewed investigation, competing explanations, and claims of a government cover-up. Decades later, Roswell remains one of the most famous and debated UFO incidents in American history.