Curiosity rover sees a pixel's-worth of comet Siding Spring

When Comet Siding Spring skimmed just 84,500 miles from Mars last month, NASA's Opportunity and Curiosity Rovers – along with several orbiting Mars spacecraft – readied their cameras to record the historic flyby. Opportunity's photos revealed a small, fuzzy blob against the stars of Cetus the Whale, but most of us searched in vain to find any trace of the comet among the blizzard of noise in pictures snapped by Curiosity. Yet it may be there after all. 

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