Comet C/2013 A1 is about to come very, very close to the Red Planet – and NASA is ready for the fly-by. A speeding comet the size of a mountain will come within 140,000km of Mars on Sunday Oct ...
The flyby of Comet Siding Spring on planet Mars impacted the magnetic field of the Red Planet. The disruptions continued for several hours after the comet's departure.
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