Ison is not a comet, first of all, it's a planet the size of Earth or bigger. Second, Ison itself will not impact earth, but one of it's wings (the left one), will destroy a large portion of Earth, as we sit in it for a month or so. The wing has thousand of asteroids, comets etc. Pictures of Ison at the moment are top secret, for that reason. The sky will be red for weeks, and the sun will be blocked.