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Valles Marineris

[ val-uhs-mar-uh-nair-is ]

noun

, Astronomy.
  1. a canyon on Mars, 3,100 miles (5,000 km) in length, named after the Mariner spacecraft.


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Example Sentences

It also hasn’t been exposed in a half-dozen other locations—impact craters and massive trenches, like Valles Marineris, the Grand Canyon of Mars.

Numbers alone are one thing, but breathtaking close-up images of Valles Marineris recently released by the University of Arizona put the stats into perspective.

It’s tiny details like these that will help us understand how Valles Marineris came to be, as well as the planet’s climate history as a whole.

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