Comet ISON: The comet of the century or cosmic bust? - Nov 20, 2013

Posted: Jul 17, 2015 1:38 PM ET

    Comet ISON: The comet of the century or cosmic bust? - Nov 20, 201325:12

    The twin-tailed sun grazer called ISON, now streaking overhead, may be the brightest comet this century. And as it soars towards maximum brilliance this weekend, we look for the meaning of its lambent glow.

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