Comet Siding Spring: A Close Encounter with Mars
October 9, 2014
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Comet C/2013 A1 Siding Spring will make a close flyby of Mars on Oct. 19, 2014. At a distance of only 87,000 miles - about 1/3 the distance between the Earth and moon - it's a near miss of the Red Planet. Find out how NASA's Mars orbiters will evade dust from the comet.