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  • (cur | prev) 21:48, March 11, 2018190.100.197.210 (Talk)‎ . . (345 bytes) (+345)‎ . . (Created page with "The term '''sagan''', named after {{w|Carl Sagan}}, is defined as four billion.<ref>http://www.neatorama.com/2009/11/09/10-neat-facts-about-carl-sagan</ref> It was also the p...")
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