The most complete digital topographic ever made of the Earth was released by NASA today (Oct. 17). The map, known as a global digital elevation model, was created from images collected by the ...

Topographical map of the world, with higher mountain ranges in dark brown and lower areas in green. The Northern Hemisphere has more land mass and higher mountains than the Southern Hemisphere ...

most extensive global topographic map. The data, extensive enough to fill the U.S. Library of Congress, was gathered during the Space Shuttle Endeavour Radar Topography Mission (SRTM) in February ...