Galileo navigation satellite network. Artwork of several navigation satellites for the European Galileo network, orbiting Earth (not seen). Each satellite has solar panels (blue) to provide power from the Sun. The Milky Way is seen running down right. Galileo will be a civilian global positioning system (GPS) that will consist of 30 satellites orbiting over 23,000 kilometres above the Earth. Galileo will be more accurate than, and compatible with, the other GPS systems. Applications include train, aircraft, and train guidance, global rescue services, and road use taxation. The network will operate from 2008.