an introduction to our solar system
Our solar system is made up of the sun, nine planets, comets, many asteroids, and much more. The nine planets are broken up into two groups, terrestrail, and gas giants. Over the years scientists have made many new observations about our solar system. With these observations they were able to create models of our solar system, and improve their theories about our solar system.
(Picture from http://www.smashingcovers.com/cover/237/our-solar-system)