The Martian Limb

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Caption:

The Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red and blue wide angle cameras provide daily coverage of the planet "from limb to limb." The "limbs" are the edges of the planet as seen to the west and east of the spacecraft. Depending on weather conditions, clouds or haze can sometimes be seen above the limb. This picture was taken by the blue camera in December 2002. It is an oblique view looking westward across heavily cratered terrain at high southern latitudes. A thin line of haze, high in the martian atmosphere, can be seen above the planet's surface. The view of craters in the foreground is enhanced by the presence of bright, winter-time carbon dioxide frost. The darkness above the limb is outer space.

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