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Martian crater shows water erosion
The picture shown here was taken by the Mars Global Surveyor narrow angle (high resolution) camera and "colorized" by applying the colors of Mars obtained by the Mars Orbiting Camera wide angle cameras. It shows gullies on the wall of a meteor impact crater that occurs in Newton Basin in Sirenum Terra, Mars. The picture is one of the highest-resolution images obtained from Mars. Its resolution is 1.5 meters (5 feet) per pixel--objects the size of school buses can be resolved. The gullies in this crater originate at a specific layer and may have formed by release of groundwater to the martian surface in geologically recent times.