NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Martian topography. Three-dimensional map of the topography of Mars. Elevation is colour-coded, from white (highest) through red, yellow and green to blue (lowest). The Martian equator runs along centre. Three volcanoes (white) are seen on the limb at right. From bottom to top, these are Arsia Mons, Pavonis Mons and Ascraeus Mons. To their left is Olympus Mons (white), the largest volcano in the solar system. At upper left is Elysium Mons (red), another volcano. Data collected by the Mars Orbiter Laser Altimeter (MOLA) on the Mars Global Surveyor spacecraft. Mars' surface.
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