Scientist or researcher

Carl Sagan

1966-01-01year known, day not recorded

Astronomer, science communicator, and the era's most influential public UFO skeptic - who nonetheless held high security clearances, worked on Project A119 (a 1958 plan to detonate a nuclear device on the Moon), used the Drake equation to estimate frequent past visitations of Earth, and (per Richard Hoagland and others) privately encouraged anomaly researchers while publicly ridiculing them. A two-faced-skepticism figure paralleling Donald Menzel.

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.

2 of 5 connections resolve to a document you can open.

Documents1 behind a connection1 more that names it

Documents behind a connection

Symposium on Unidentified Flying Objects 1968-07-29

Also named in documents we hold

This entity's name appears in the 2 documents below. That is the entire claim. Nothing here is evidence for anything on this map, no connection rests on it, and it says nothing about what the document is about. It is a place to look next.

Symposium on Unidentified Flying Objectsalready cited above

named on a page we have read · p. III

…f Meteorology, University of Arizona, Tucson, Ariz. 18; Dr. Carl Sagan, associate professor of astronomy, Center for Radiophysics…

Unidentified Flying Objects

named on a page we have read · p. 5996

…unor F. Carter, Mr. Jesse Orlansky, Dr. Richard Porter, Dr. Carl Sagan, Dr. Willis H. Ware

5 connections

ColourScientistsHearings & panels

→ House Symposium on UFOs (1968)

testified as an astronomer at Cornell

Symposium on Unidentified Flying Objects
printed p. 86 · PDF p. 92 checked against the page
→ SAB Ad Hoc Committee to Review Project Blue Book

was a member of it

same document as the row above
printed p. 85 · PDF p. 91 checked against the page
← John Brandenburg names a source we do not hold

the podcast recounts Sagan phoning Brandenburg to ask why he was causing trouble with his Mars claims

American Alchemy podcast (Jesse Michels), 2026
→ J. Allen Hynek names a source we do not hold

fellow astronomers who both took part in the 1969 AAAS UFO symposium - Sagan co-organized it, Hynek spoke at it - and took opposite public stances

Proceedings: "UFO's - A Scientific Debate. An AAAS symposium, Boston, Dec. 1969," Carl Sagan and Thornton Page, Eds., Cornell University Press. Sagan and PAGE are the editors; Hynek is not. Catalogued in Science 180:4086
→ Donald Menzel names a source we do not hold

parallel case: a prominent astronomer-skeptic who privately held high security clearances

analyst note; Wikipedia; NASA Ames

1 correction to this record

Generated from the record, not written by hand. Every change keeps what the map used to say, because a correction nobody can see is indistinguishable from never having been wrong.

Carl Sagan → SAB Ad Hoc Committee to Review Project Blue Book

sat on the committee whose recommendation produced the Condon study

was a member of it

The biography on printed 85 proves the membership and says nothing about a recommendation, Condon or Colorado. The causal step was already on the map as link 1022 and already sourced, so the trim removes a duplicate assertion rather than a claim.