Project Blue Book
The U.S. Air Force's official UFO investigation program from 1952 to 1969, which cataloged over 12,000 sightings and concluded most had conventional explanations.
Documented record
Known Facts
Project Blue Book ran from March 1952 to December 1969 at Wright-Patterson Air Force Base.
The project investigated 12,618 UFO sightings, concluding 701 remained 'unidentified.'
Edward Ruppelt, the first director, was initially open-minded but later became skeptical.
J. Allen Hynek, a scientific consultant, started as a skeptic but later became a believer.
The 1968 Condon Report concluded UFO study was not scientifically useful.
Congress ended Blue Book in 1969, concluding UFOs posed no threat to national security.
Supporting claims & documentation
Evidence For
Blue Book Case Files
PRIMARY SOURCEOver 12,000 case files documenting UFO reports and Air Force investigations.
SOURCE:U.S. Air Force / National Archives
Ruppelt's 'The Report on Unidentified Flying Objects'
SECONDARY SOURCEFirst director's insider account of the project's operations and findings.
SOURCE:Edward J. Ruppelt
Counterpoints & criticisms
Evidence Against
Condon Report Conclusion
ANALYSISScientific panel concluded further UFO study would not contribute to science.
SOURCE:University of Colorado / U.S. Air Force
Low Unidentified Rate
ANALYSISOnly 5.5% of cases remained unexplained, suggesting most had conventional causes.
SOURCE:Blue Book statistical analysis
Unresolved inquiries
Open Questions
Were any Blue Book cases genuinely unexplained?
Did the Air Force take the phenomenon seriously enough?
Was there a secret UFO investigation parallel to Blue Book?
Why did Hynek change from skeptic to believer?
Chronological record
Timeline
Project Blue Book established at Wright-Patterson AFB.
Washington D.C. UFO sightings prompt White House interest.
Condon Committee formed at University of Colorado.
Condon Report released, recommending end of UFO study.
Project Blue Book officially terminated.
Connected dossiers
Related Investigations
References & further reading
Sources
Automatically discovered links
Related Connections
2 organizations appear in both.
3 organizations appear in both.
U.S. Air Force appear in both.