Mars revealed

Mars revealed

. Thousands of Viking images of Mars have been pieced together to provide the first detailed map of the entire globe of another planet. This mosaic, centered on 20 degrees latitude and 60 degrees west longitude, is most like the view seen by a distant observer looking through a telescope. The projection includes the great equatorial canyon system, Valles Marineris (below center), the four huge Tharsis volcanoes (left), and the north polar cap (top). Also note the heavy impact cratering of the highlands (bottom and right), and the younger, less heavily cratered terrains elsewhere. (Courtesy of NASA, JPL, and the U.S. Geological Survey.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University