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About the Cover

Cover Figure


COVER False-color image of the north polar region of Mars in summer, showing its composition as inferred by the OMEGA/Mars Express visible and near-infrared imager. The cap is made of water ice (blue) mixed with mineral grains (shades of gray), with dark zones of ice-free minerals within which vast areas of gypsum (red), a hydrated sulfate, have been discovered. See page 1574. [Image: © Institut d'Astrophysique Spatiale]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)