They are relatively small, composed mostly of rock, and have few or no moons. There are other smaller object that orbit the Sun, including asteroids , comets , and meteoroids .
Comets are small, icy bodies that orbit the sun.
They have very long tails. Meteoroids are small bodies that travel through space. Most are very tiny. Solar System Activities Solar System coloring pages An interactive puzzle on the Solar System. Solar System Model to make The Solar System as it is today from Fourmilab Switzerland.