Documents / Report
This Defense Intelligence Agency reference document, dated 11 March 2010, is one of the advanced technology reports produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) program. It introduces the Statistical Drake Equation, which replaces each factor of Frank Drake's 1961 equation with a uniform random variable to estimate how far away the nearest extraterrestrial civilization is. In the worked example, there is a 75% probability that the nearest civilization lies between 1,361 and 3,979 light years from Earth.
“Carl Sagan”3 pages
UNCLASSIFIED/ /f81il 8fflll"'k WliEii SUlklf References [1] Benford, Gregory, Jim and Dominic, "Cost Optimized Interstellar Beacons: SETI", arXiv.org web site (22 Oct. 2008). [2] Carl Sagan, "Cosmos", Random House, New York, 1983. See in particular the pages 298-302. [3] Bennet, Jeffrey, and Shostak, Seth, "Life in the Universe", second edition, Pearson - Addison Wesley, San Francisco, 2007. See in particular page 404. [4] C. Maccone, "The Statistical Drake Equation", paper #IAC-08-A4.1.4 presented on October 1st, 2008, at the 59 th International Astronautical Congress (IAC) held in Glasgow, Scotland, UK, September 29 th thru October 3 rd , 2008. 55 UNCLASSIFIED/ /f81il 8ffll!IAI!: l!l!iili 8Hl!:l/
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 55 pages are in the text index: search them above, or from the library's search.