||World Wind is NASA's most ambitious software project to date. This global information system pulls together a high resolution map of the entire world and layers into it satellite information from a variety of sources. The program's Web page says that World Wind lets you zoom from satellite altitude into any place on Earth, leveraging high resolution LandSat imagery and Shuttle Radar Topography Mission (SRTM) elevation data to experience Earth terrain (or any planet with the data) in visually rich 3D, just as if you were really there. Virtually visit any place in the world. Look across the Andes, into the Grand Canyon, over the Alps or along the African Sahara.