A Closer Hubble Encounter With Mars - Tharsis
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A Closer Hubble Encounter With Mars - Tharsis

March 17, 2003
This image is centered on the region of the planet known asTharsis, home of the largest volcanoes in the solar system. The bright,ring-like feature just to the left of center is the volcano OlympusMons, which is more than 340 miles (550 kilometers) across and 17 miles(27 kilometers) high. Thick deposits of fine-grained, windblown dustcover most of this hemisphere. The colors indicate that the dust isheavily oxidized ('rusted'), and millions (or perhaps billions) of yearsof dust storms have homogenized its composition. Prominent lateafternoon clouds along the right limb of the planet can be seen.

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