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• Carl Sagan Person · 5 stories

  An astronomer whose name surfaces on the sceptical side of several cases.

Documents27 · see all

• Flying Saucers Again: Do You Believe in Them? FOIA release
  Central Intelligence Agency· 2001-03-12· 10 pages· 1 page mentions it
  • p. 7 …The American is Carl Sagan of Harvard University and the Smithsonian Astrophysical Observatory. The Russian is Academician Josef Shmuelovich Shklovskii…
• Symposium on unidentified flying objects: hearings before the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, second session, July 29, 1968. Hearing transcript
  U.S. House of Representatives· 1968-07-29· 256 pages· 6 pages mention it
  • p. 91 …CARL SAGAN Dr. Carl Sagan is Associate Professor of Astronomy in the Center for Radio- physics and Space Research at…
  • p. 101 …CARL SAGAN, Department of Astronomy, Cornell University. Thank you. Mr. HECHLER. Dr. Sagan, there have been some recent experiments at…
• Defense Intelligence Reference Document An Introduction To The Statistical Drake Equation Report
  Defense Intelligence Agency· 55 pages· 3 pages mention it
  • p. 7 …We believe that no better introductory description of the Drake equations exists other than the one given by Carl Sagan…
  • p. 55 …2008). 2 Carl Sagan, "Cosmos", Random House, New York, 1983. See in particular the pages 298-302. 3 Bennet, Jeffrey…
• AAWSAP DIRD, An Introduction to the Statistical Drake Equation, March 2010 Official release
  U.S. Department of War· 2010-03-11· 55 pages· 3 pages mention it
  • p. 7 …We believe that no better introductory description of the Drake equations exists other than the one given by Carl Sagan…
  • p. 55 …2008). 2 Carl Sagan, "Cosmos", Random House, New York, 1983. See in particular the pages 298-302. 3 Bennet, Jeffrey…
• Sky Canada Project report (PDF) Report
  Office of the Chief Science Advisor, Government of Canada· 2025· 30 pages· 1 page mentions it
  • p. 8 …This is what renowned astron- omer and author Carl Sagan meant when he famously said, “Extraordinary claims require extraordinary evidence…
• Department of the Air Force Committee to Review Project Bluebook, 1966-1967 Official release
  U.S. Department of War· 1967-04-17· 85 pages· 1 page mentions it
  • p. 7 …Carl Sagan Dr. Willis H. Ware Col John P. Spaul.ding Dr. Anthony Cacioppo Col Warren Wheeler Maj Hector Quintanella…

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