The GeoEye-1 satellite whizzes in low-Earth orbit, but when will it be taking photos over you? Alpha will show you on a map, in this case a 3D view of the globe that shows the satellite above Antarctica. It'll also tell you the satellite's 16,812-mph average velocity, its 428.4-mile altitude, and 98-minute orbital period. Photo by Stephen Shankland/CNET Caption by Stephen Shankland