In about 10 hours, the New Horizons mission will flyby Ultima Thule, making it the most distant object ever visited by a spacecraft. Though the icy world is more than 4 billion miles from Earth, New Horizons will pass within about 2,200 miles of the 18.5-mile-wide rock at more than 30,000 mph.

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Submitted December 31, 2018 at 02:28PM by clayt6 http://bit.ly/2GM2ZLi