Astrophysics Supplement
Saturday, September 29, 2012
2012 S1 (ISON) - Great Comet of 1680 or Kohoutek 1973?
2012 S1 (ISON) - Great Comet of 1680 or Kohoutek 1973?
http://news.nationalgeographic.com/news/2012/09/120927-new-comet-2012-s1-ison-science-space-moon/
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