NASA and other space agencies operating at Mars are planning to put a full-court press on the comet Siding Spring 2013 when it passes about 87,000 mi. from Mars on Oct. 19, offering a rare opportunity to observe an object from the distant Oort Cloud that probably formed much earlier than Earth. The two newest Mars orbiters – NASA’s Mars Atmosphere and Volatile Evolution (Maven) and the Mars Orbiter Mission (MOM) sent by the Indian Space Research Organization – will break ...


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