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Drake equation

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Title: Drake equation  
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Subject: Fermi paradox, Search for extraterrestrial intelligence, Astrobiology, Rare Earth hypothesis, Frank Drake
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Drake equation

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  • ^ Tarter, J. (May–June 2006). "The Cosmic Haystack Is Large".  
  • ^ Alexander, A. "The Search for Extraterrestrial Intelligence: A Short History - Part 7: The Birth of the Drake Equation".  
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  • ^ Krauthammer, C. (29 December 2011). "Are we alone in the Universe?".  
  • ^ Webb, S. (2002). If the Universe Is Teeming with Aliens... Where Is Everybody?.  
  • ^ Hanson, R. (15 September 1998). "The Great Filter — Are We Almost Past It?". Retrieved 2013-08-21. 
  • ^ "They're made out of Meat, by Hugo and Nebula Winner Terry Bisson". Baetzler.de. Retrieved 7 March 2010. 
  • ^ The Making of Star Trek by Stephen E. Whitfield and Gene Roddenberry, Ballantine Books, N. Y., 1968
  • ^ "Carbon Based Lifeforms – Abiogenesis". Last.fm. Retrieved 23 March 2012. 
  • ^ Gregory Mone and Jim Rossiter, "The Dalek Variable", Popular Science, July 2013, p. 81.
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