A massive two-mile-wide comet will be visible from Earth in late 2013, possibly appearing brighter than the moon during November and December, according to astronomers.The comet, discovered by amateur Russian astronomers Vitali Nevski and Artyom Novichonok, is among the brightest comets ever identified. According to NASA, the comet is currently falling toward the Sun from between the orbits of Jupiter and Saturn. In early October 2013 it will pass near Mars — where NASA’s Mars Curiosity rover will snap a photo.
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