Caelum Incognitum — The interactive encyclopedia of ufology
The 1947 wave
Cases, documents & milestones
After Kenneth Arnold’s sighting of 24 June 1947, hundreds of reports flooded the American press within weeks. The 8 July announcement that a “disc” had been recovered at Roswell, quickly retracted, amplified the stir. The episode gave rise to the expression “flying saucers” and to the authorities’ interest.