http://spaceweather.com
SUNDIVING COMET: Astronomers are paying close attention to a newly-discovered comet, C/2012 S1 (ISON), which is heading for a remarkably close encounter with the sun. Fierce solar heat could turn Comet ISON into a bright naked-eye object in Nov. 2013. First images and speculation about the comet are highlighted on today's edition of http://spaceweather.com
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