ocr: SOLAR SYSTEM Our planetary system and its centre star, the Sun, torm the Solar system. Nine planets cir- cle the Sun: Mercury, Venus, Earth, Mars, Ju- piter, Saturn, Uranus, Neptune, and Pluto, in order from the Sun outwards. The planets may have one or several circling bodies of their own, called moons. Their number ex- ceeds 60. New small moons are to be tound every now and then. (1999 three new ones.) In addition to the planets, the Sun is circled by thousands of asteroids, whose orbits lie mostly between Mars and Jupiter, in the so-called asteroid belt. The Sun is also circled by a large n ...
