There is a more advanced version of this app available. You can download it Realistic 3D space travel simulator and planetarium. In this app you will find: All major planets and moons in the Solar System, with their accurate keplerian orbits: Sun. Mercury. Venus. Earth and Moon. Mars and its moons Phobos and Deimos. Jupiter and its major moons: Io, Europa, Ganymede, Callisto.