Comet Siding Spring headed for close encounter with Mars this Sunday October 19th 2014

Comet Siding Spring C/2013 A1 – a relatively rare “Oort Cloud” comet – will pass within 88,000 miles of our red planetary neighbor Mars on Sunday, Oct. 19 at about 2:28 p.m. EDT. That distance is one-third the mileage from Earth to the moon. In the cosmic scheme, that’s a close shave. The atmosphere of the comet could interact with the atmosphere of Mars, possibly leading to Martian auroras.
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