Wednesday, October 31, 2012

The Grandest Canyon

Nice image of one small part of the largest canyon in the solar system, the Valles Marineris on Mars. Just this side channel is larger than earth's Grand Canyon; the whole system is 2,485 miles (4,000 kilometers) long, up to 124 miles (200 kilometers) wide and up to 6.8 miles (11 kilometers) deep.
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