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Mars Revisited



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Zeroing In
Images by ASU and NASA/JPL (left and center), MSSS and NASA/JPL (right) 

Three views zoom in on the caldera floor of the Nili Patera volcano. From afar a mosaic of infrared images from the Thermal Emission Imaging System (THEMIS) on Mars Odyssey orbiter shows a mottled landscape (left). A closer THEMIS view (at center) zeroes in on a field of dunes marching across a hard rock surface. Moving in even closer (right), an image from the Mars Orbiter Camera (MOC) aboard the Mars Global Surveyor clearly shows sinuous dunes. Attention photo buffs: This narrow-angle MOC image has a resolution of three meters (eight feet) per pixel; for laymen, that means the camera can pick out objects about the size of a bus. Mars has never before been seen with such clarity.





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