coondoggie (973519) writes "NASA today released images of a comet that will make a pass within 84,000 miles of Mars — less than half the distance between Earth and the moon. NASA said the Hubble Space Telescope captured the image of comet C/2013 A1, also called Siding Spring, at a distance of 353 million miles from Earth. Hubble can't see Siding Spring's icy nucleus because of its minuscule size. The nucleus is surrounded by a glowing dust cloud that measures roughly 12,000 miles across, NASA said."
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