Hynek’s Sixfold UFO Classification: From Distant Sightings to Close Encounters
To the point
Hynek's sixfold framework classifies UFO sightings by proximity and observed details—Nocturnal Lights, Daylight Discs, Radar-Visual reports, and Close Encounters of the First, Second, and Third Kind—distinguishing distant, data-poor phenomena from near, data-rich events and became widely known through Steven Spielberg's 1977 film.
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