Philip Klass
From the UAP Encyclopedia, the open encyclopedia of UFO and UAP history · 👤 Person
Contents 4

| Type | Person |
|---|---|
| Also known as | Klass |
| On the Timeline | 3 events, 1947–1995 |
Philip J. Klass (1919–2005) was an American journalist who worked for more than 40 years at Aviation Week & Space Technology, specialising in avionics. He became the best-known UFO skeptic of his time.
Skepticism

In his first book, UFOs—Identified (1968), he suggested that many sightings were ball lightning or plasma. Later books, including UFOs Explained (1974) and UFO Abductions: A Dangerous Game (1988), argued that cases were misidentifications, hoaxes or the result of suggestion. He challenged the Travis Walton abduction, the MJ-12 papers and Roswell claims, and offered cash bets against researchers' predictions.
Legacy

Klass co-founded what is now the Committee for Skeptical Inquiry in 1976. Researchers often clashed with him, but his work set a standard for skeptical investigation.
On the UAP Timeline

- Hillenkoetter MJ-12 memo of 19 September 1947 (19 September 1947) — A disputed memo attributed to CIA Director Hillenkoetter calls for a presidential directive and scientific study of the discs.
- Pascagoula abduction (11 October 1973) — Charles Hickson and Calvin Parker say they were taken aboard a craft near Pascagoula, Mississippi.
- GAO Roswell records report (28 July 1995) — Rep. Steven Schiff says Roswell base records were destroyed, per a GAO audit.
References
- Philip J. Klass — Wikipedia · en.wikipedia.org · archived copy
This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.
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