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The Hynek Scale UFO Sightings Encounter Classification System

April 15, 2017
 
UFO Sightings protocol
 
Also called the Close Encounter classification system, the Hynek scale is named after American astronomer and ufologist J. Allen Hynek. The classification was first introduced in his 1972 book  The UFO Experience: A Scientific Inquiry (available here in PDF)

Nocturnal Ligh…

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