Introduction to Asteroids
Submitted: Tue Oct 19 2004
CT: Space Objects and Comets: Introduction to Asteroids
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Asteroids Asteroids are small, rocky objects which orbit the Sun along with all the other planets. They are also commonly called minor planets (and rarely as planetoids) because they are considerably smaller than ordinary planets. Astronomers estimate that there are more than 100,000 asteroids in our solar system although only about 8000 have been cataloged as of mid-1997.