Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Contrasting colors trace changing elevations in this new high-resolution topographic map of Mars . Likely the result of an asteroid impact, Mars' deepest basin is about 1300 miles across making it one of the largest impact features in the Solar System. Explorations of MOLA's rich topographic database are expected to produce insights into water flows and the geologic history of Mars.
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