Project Blue Book was the United States Air Force’s official investigation into unidentified flying objects from 1952 to 1969. Its investigators collected and analyzed more than 12,000 reports to determine whether UFO sightings threatened national security or revealed unknown technology. Most cases were eventually attributed to aircraft, weather balloons, astronomical objects, unusual atmospheric conditions, or misidentifications. However, 701 reports remained officially classified as unidentifi
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Project Blue Book was the United States Air Force’s official investigation into unidentified flying objects from 1952 to 1969. Its investigators collected and analyzed more than 12,000 reports to determine whether UFO sightings threatened national security or revealed unknown technology. Most cases were eventually attributed to aircraft, weather balloons, astronomical objects, unusual atmospheric conditions, or misidentifications. However, 701 reports remained officially classified as unidentifi
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