Planets

= **Planets** =

There are eight planets in our solar system. The order from largest to smallest is Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, and Mercury. One theory of how the planets arrived is the big bang. The big bang was when there was a big explosion which created the universe 13.7 billion years ago. The planets have to orbit the sun in a circle in order to be considered a planet. It also has to be round and it has to clear the neighborhood around its orbit.

Maria, Mia, Matthew and Steve

