The Solar System The solar system consists of the sun, the nine planets and their moons, and other small bodies, such as asteroids and comets. Many of the planets are also orbited by one or more moons. The Nine Planets The nine planets, in order of their distance from the sun are as follows: 1. Mercury 2. Venus 3. Earth 4. Mars 5. Jupiter 6. Saturn 7. Uranus 8. Neptune 9. Pluto