World Wind de la NASA

World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain 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

Para el que no entienda ingles, este programa, del cual podeis ver unas imágenes en su web, de la NASA nos permite hacer zoom desde la altitud de un satelite a cualquier parte de la Tierra. IMPRESIONANTE

http://worldwind.arc.nasa.gov/