Scientist or researcher
Donald Menzel
1952-01-01year known, day not recorded
Harvard astronomer and the era's most prominent public UFO skeptic, having authored multiple books debunking sighting reports. Named in the disputed 1984 MJ-12 documents as an alleged member ("MJ-10") - an irony Stanton Friedman highlighted after FOIA research revealed Menzel privately held a Top Secret Ultra clearance and extensive undisclosed ties to the NSA.
In the UAP recordRuled into the unidentified-phenomena thread on 2 September 2026 from this entity's own name and role text, which contain: "ufo". An editorial classification of what thread this entity belongs to; it rests on no page and does not claim to. Neighbours were not used - see apply-subjects-2026-09-02.mjs for why.
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ColourJournalistsScientistsGovernmentHearings & panels
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submitted a prepared paperSymposium on Unidentified Flying Objectsprinted p. III · PDF p. 5 checked against the page
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rebutted his meteorological-optics explanations case by case before Congresssame document as the row aboveprinted p. 80 · PDF p. 86 checked against the page
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read his book in Russian translation and rejected its conclusionsReport on Conversations With Soviet Scientists on Subject of Unidentified Flying Objects in the USSRprinted p. 1 · PDF p. 1 checked against the page
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named as an alleged member ("MJ-10")MJ-12 documents (widely regarded as disputed/forged); Stanton Friedman analysis
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Friedman revealed his undisclosed NSA ties despite public skepticismFriedman FOIA research
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prominent public skeptic of the sightings it investigatedUSAF Project Blue Book records; Ruppelt, Report on Unidentified Flying Objects (1956)
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parallel case: a prominent astronomer-skeptic who privately held high security clearancesanalyst note; Wikipedia; NASA Ames