Project Blue Book was created in 1952.

Project Blue Book officially ended in 1970. It was a United States Air Force study that investigated claims of UFO sightings and concluded that most could be explained by natural phenomena.

It started in 1952 and ceased in January 1970

Project Blue Book was a program started in 1952 to A. See if Aliens were a national threat and B. Analyze the components and workings of UFOs. They collected data from thousands of UFO sightings, and all the evidence was destroyed in 1970

Project Blue Book was a United States Air Force study of unidentified flying objects (UFOs) conducted from 1952 to 1969. Its purpose was to determine if UFOs were a threat to national security and to scientifically analyze UFO sightings. The project resulted in over 12,000 UFO reports, with most being easily explained but some remaining unidentified.