[UPDATE: This visualization was taken down by the author, so is no longer available]
One of the Google Earth Community (GEC) members called ‘pseabury’ (Paul Seabury) has published a number of KMZ files containing visualizations for a number of satellite types (Iridium, amateur radio, Globalstar, disaster monitoring, military, geodetic, geostationary, and more). Each collection shows the satellites, their footprints and cones, their subsatellite points, and their orbital data in the info balloon. They look really cool in Google Earth (as seen in the screenshot). Check out the one for the
Iridium satellites for example. Or, try the GPS satellites which are in orbits 12,600 miles above the Earth. You can find all the different KMZ files for different types of satellites as separate posts in this thread. The first post contains a zip file with a program for running the satellite updater he wrote (read more details in another post in the thread). Paul also did the Tropical Data network link useful during hurricane season which I first wrote about over a year ago.