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The Little Rovers That Could
JULY 2005
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Signs in Stone
Image by the European Space Agency
Floods, glaciers, and volcanic eruptions may all have left their marks on the steep walls and undulating floor of the 2,500-mile-long (4,000-kilometer-long) Valles Marineris. Using terrain relief measurements and images from the high resolution stereo camera aboard the Mars Express orbiter, European Space Agency scientists generated this fly-over view of the Ophir Chasma, a deep canyon at the northern end of the valley.
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