3 events, from 1953 to 2017
1953 · 73 years ago · Over Hassleholm, Sweden
Captain Olof Christiernsson and his crew observed a round, metallic object flying above a low cloud layer at an altitude of approximately 5,000 feet, heading south. The Swedish Air Force ordered an investigation and requested reports from all radar stations in the country.
Read the original file in the archive →1969 · 57 years ago · Wright-Patterson Air Force Base, Ohio, United States
The US Air Force officially closed Project Blue Book, its long-running program for investigating UFOs, concluding that UFOs do not pose a threat to national security.
Source ↗2017 · 9 years ago · New York, United States
The New York Times published an article exposing the Pentagon's secret Advanced Aerospace Threat Identification Program (AATIP), which investigated military personnel encounters with UFOs.
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