Comet ISON closest approach distance relative to the size of the Sun

Comet ISON closest approach distance relative to the size of the Sun
Comet ISON closest approach distance relative to the size of the Sun Comet ISON (C/2012 S1) approaches the Sun on Nov. 28, 2013 at a distance closer than one solar diameter away from the Sun's surface, as depicted in this diagram. NASA / Bruce Betts

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