The USAF's Project Blue Book concluded that less than 2% of reported UFOs were 'psychological' or hoaxes, while a study conducted by Allan Hendry for the Center for UFO Studies (CUFOS) found that less than 1% were hoaxes or psychological in nature.

Authors

• Person: Not available Organization: Wikipedia
  Unidentified flying object - Wikipedia

Sources

• Unidentified flying object - Wikipedia en.wikipedia.org Wikipedia via serper

Referenced by nodes (5)

• United States Department of the Air Force entity
• Project Blue Book event
• Air Force entity
• Project Blue Book concept
• Center for UFO Studies entity