Because of its blood-red color (which comes from iron-rich dust), this planet was named for Mars, the Roman god of war. Mars is the fourth planet from the Sun, situated between Earth and Jupiter. Three-quarters red, Mars also has dark blotches on it and white areas at the poles—these are white polar ice caps.
This is an image of the Martian north pole in summer. Photo courtesy of NASA
This image shows a portion of a 1,700 km long and 65 km wide swath which was taken in south-north direction across the Grand Canyon of Mars (Valles Marineris) from two perspectives. Photo courtesy of NASA
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