Comet Ison
Near Mars flyby on the first of Oct. which will be 6 times closer than its closest pass to earth and we might get some images from the red planets rovers and orbiters in the next couple days. As it passes Mars it should start to become brighter shedding even more heading towards the sun. Let's hope the close encounter with the sun doesn't break it up.
Credit:JPL
As seen from Mars:
Universe Today