Project Blue Book
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Project Blue Book was an official US Air Force program for investigating UFOs. It operated from March 1952 until it closed on December 17, 1969. Its headquarters were at Wright-Patterson Air Force Base in Ohio.
The Air Force documented 12,618 reports, 701 of which remained officially designated as “unidentified.” The Air Force concluded that the cases it investigated posed no threat to national security and that it had found no evidence of technology beyond the limits of modern scientific knowledge or of extraterrestrial vehicles.
Here you’ll find articles and a video about the program, subsequent UFO investigations, and related documents. The project files are now held by the National Archives as retired, declassified Air Force records.
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Common questions about Project Blue Book
What was Project Blue Book?
It was an official US Air Force program for investigating UFOs. According to the Air Force, its goals were to determine whether the phenomena posed a threat to national security and whether they contained scientific information or evidence of advanced technology.
When did Project Blue Book operate?
The program ran from March 1952 until December 17, 1969, when it was discontinued.
How many reports did Project Blue Book investigate?
The Air Force documented 12,618 reports submitted to the program. Of these, 701 remained officially designated as “unidentified.”
What did the Air Force conclude about UFOs?
The Air Force concluded that none of the cases investigated by the program indicated a threat to national security. It also said it found no evidence that the unidentified cases involved extraterrestrial vehicles or technology beyond the limits of modern scientific knowledge.
Where can I find the Project Blue Book records?
The project files are now held by the US National Archives as retired, declassified Air Force records.