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NASA spacecraft around Mars send back images of comet Siding Spring
NASA spacecraft around Mars send back images of comet Siding Spring

NASA's Mars Reconnaissance Orbiter has released the first resolved images of comet Siding Spring's nucleus -- and it's a lot smaller than people expected. The nucleus of the comet that zoomed past the Red Planet on Sunday appears to be about half its predicted size of about half a mile. This surprising find could be one of many to come as scientists pore over the data sent back by the NASA orbiters and rovers that teamed up to study the mysterious visitor from the solar system’s distant Oort cloud. All three orbiters -- the Mars Reconnaissance Orbiter, Mars Odyssey and Mars Atmosphere and Volatile EvolutioN, a.k.a. MAVEN -- captured data that are being relayed to...

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