The UFO Experience: A Scientific Inquiry

The Air Force's longtime scientific consultant on Projects Sign, Grudge, and Blue Book — who began as a professional debunker — used two decades of raw case files to argue the phenomenon deserved serious scientific study. The book introduced Hynek's six-part typology (Nocturnal Lights, Daylight Discs, Radar-Visual, and three grades of Close Encounter) that remains ufology's standard classification language.

Author

J. Allen Hynek

Published

1972

Library rank

#4