Robert L. Park

In 1947 a mysterious object fell from the sky and crashed near the city of Roswell, New Mexico. For fifty years, the U.S. government claimed that it was a weather balloon. Anecdotal accounts indicated otherwise. Decades later, some even claimed to see alien bodies amid the wreckage. Many UFO researchers still believe that a UFO crash and subsequent cover—up-an event referred to as the "Roswell Incident"-gave the U.S. military access to extraterrestrial technology.

In 1997 the U.S. Air Force finally admitted that the crashed object was not a weather balloon. They now claim that it was Project Mogul, a flying spy microphone designed to detect Soviet nuclear missile tests. Ufologists generally dismiss this as a second, desperate cover story scraped together to silence critics...