Project Blue Book Closes: USAF Ends UFO Investigation
The United States Air Force shuts down Project Blue Book after concluding that most UFO sightings stem from mass hysteria, hoaxes, or simple misidentifications of ordinary objects. This definitive dismissal ends decades of official speculation and forces the public to confront the mundane explanations behind celestial anomalies rather than extraterrestrial theories.
December 17, 1969
57 years ago
Key Figures & Places
What Else Happened on December 17
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