This view of Mars, the sharpest photo ever taken from Earth, reveals small craters and other surface markings only about a dozen miles across. This image on was taken a few days before the red planet's historic "close encounter" with Earth. Among the Martian surface features are: numerous craters; several large volcanoes of the great Tharsis plateau along the upper left limb; and a large multi-ring impact basin, called Argyre, near the center.
