When the declassified record says things happened: 5,759 dated events
extracted from 5,900 across six governments, 1940s–2020s.
Click any year to read the actual events behind it.
These are reports, not objects. The timeline tracks when events were reported and
recorded — it maps reporting waves (the 1947 flap, the 1952 Washington summer, the 2000s–2010s
disclosure era), press cycles and archive coverage, not object activity. Dispositions are what governments
concluded.