| Record | OBS-0347 |
|---|---|
| Category | Extraterrestrial/UFOs |
| Status | PARTIALLY SUBSTANTIATED |
| Summary | Project Blue Book was a U.S. Air Force program that investigated UFO sightings from 1947 to 1969. The program concluded that no UFOs posed a threat to national security and found no evidence of extraterrestrial vehicles. The records were declassified and transferred to the National Archives. |
| Origin | The project began in 1947 and was headquartered at Wright-Patterson Air Force Base, Ohio. It was terminated on December 17, 1969. |
| Claimed |
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| Evidence / consensus | The Air Force's official conclusions state that no UFOs were a threat to national security, no evidence indicated technological principles beyond modern science, and no evidence indicated extraterrestrial vehicles. The 701 unidentified cases remain unexplained but do not constitute proof of extraterrestrial origin. |
Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.