Get Some Binoculars or a Telescope — You’re Going to Want to Catch This ‘Spectacular’ Event That Only Occurs Once in a Million Years

CAPE CANAVERAL, Fla. (AP) — The heavens are hosting an event this weekend that occurs once in a million years or so.

A comet as hefty as a small mountain will pass mind-bogglingly close to Mars on Sunday, approaching within 87,000 miles at a speed of 126,000 mph.

NASA’s five robotic explorers at Mars – three orbiters and two rovers – are being repurposed to witness a comet named Siding Spring make its first known visit to the inner solar system. So are a European and an Indian spacecraft circling the red planet.

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