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Correspondence

Nature 405, 13 (4 May 2000) | doi:10.1038/35011148

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Sagan breached security by revealing US work on a lunar bomb project

Leonard Reiffel1

  1. Exelar Corporation, 602 Deming Place , Chicago, Illinois 60614, USA

In his review of two biographies of Carl Sagan, by William Poundstone and by Keay Davidson (Nature 401, 857 ; 1999), Christopher Chyba deals extensively with "Davidson's accusation that the young Sagan wilfully and illegally revealed classified information..." and further states: "This is a serious and specific legal allegation which Davidson does not substantiate". The classified project involved, Project A119, entitled A Study of Lunar Research Flights (SECRET), was conducted at Armour Research Foundation (ARF) while I was manager of physics research.