Philip J. Klass

Philip Julian Klass (November 8, 1919 - August 9, 2005) was an American aviation electronics engineer turned magazine editor (of Aviation Week & Space Technology) and prominent skeptical Ufologist who initially proposed that UFOs could be plasma or ball lightning, as detailed in his 1968 book UFOs — Identified, before later abandoning this hypothesis in favour of reference to known atmospheric phenomena or simply discrediting them as hoaxes.

Selected Bibliography


Klass was the long-time editor of Aviation Week & Space Technology, serving in that role for thirty-four years (from 1952), and also published the Skeptics UFO Newsletter.