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Sagan's number

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Sagan's number, named after Carl Sagan, is the number of stars in the observable universe, currently estimated to be 70 sextillion or \(7 \times 10^{22}\).[1]

A related term, the sagan, is defined as four billion.[2]

Sources Edit

  1. http://www.numericana.com/answer/sagan.htm. Retrieved April 2013.
  2. http://www.neatorama.com/2009/11/09/10-neat-facts-about-carl-sagan

See also Edit

Large numbers in science

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