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MARS186 light-seconds This image of clouds over the surface of Mars comes from the Mars Global Surveyor, a spacecraft in orbit around the Red Planet. These high, wispy clouds are mainly comprised of water ice. To the lower left, they cover the peaks of the three large Tharsis Ridge volcanoes. At the far left, clouds are seen around the peak of Olympus Mons, the largest volcano in the Solar System. At top centre, the ice cap covering the Martian north pole is visible. Credit: NASA / Mars Global Surveyor. |