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Keeping it Clean at the South Pole

Caption: The residual ice cap of Mars' south pole (in white) tops the smooth layered deposits that overlie the cratered southern highlands. This image is a shaded relief mosaic combined with color, using data from the Mars Orbiter Laser Altimeter on the Mars Global Surveyor spacecraft. This image relates to an article that appeared in the Sept. 21, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Maria Zuber and colleagues at Massachusetts Institute of Technology in Cambridge, Mass., was titled "Density of Mars' South Polar Layered Deposits."

Credit: Image courtesy of NASA/MOLA Science Team

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