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The comet Ison will not be brighter than the full moon.

Created by dhoe on 2013-01-02; known on 2014-01-01; judged right by dhoe on 2014-01-01.

  • dhoe estimated 80% on 2013-01-02
  • simplicio estimated 40% on 2013-01-02
  • Tuxedage estimated 60% on 2013-01-02
  • dhoe   judged this prediction right on 2014-01-01.