Comets and Asteroids Author: Casey Witthohn A quick look at the scarred face of the moon provides evidence enough to see that space is not an empty place. Small bodies of rock and frozen materials are traveling around space at all times. As far as scientists can tell, they have been since the dawn of time. These space rocks are known as asteroids, comets, and meteors. Usually, people look at them as a work of art, or a phenomenon, until they come too close. Every few years a comet hits the earth with enough impact to topple trees. These are meteorites. Asteroids were once dismissed as the rodents of the sky. They have different colors and spin periods than any o