Artwork of the solar system. All the main components and features of the solar system are here visible. Moving outwards from the Sun are the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto (Dwarf planet). Planetary rings, once believed to be a feature only of Saturn, characterise also Jupiter, Uranus and Neptune. The Asteroid Belt is situated between Mars and Jupiter. This is a rich collection of several thousand smaller bodies, the biggest Ceres is 1000km in diameter, and they probably represent material which never condensed into a planet. A comet with its white tail is travelling towards the Sun in a very eccentric orbit.