Wondering how the planets and universe formed is a question that dates back many thousands of years. Astronomy is one of the oldest sciences in the world and for good reason. It takes into account the biggest subject that can be possibly studied-- the universe. To understand the universe it is important to understand our immediate solar system. How does it work, how did it come to be, and how old is it? Luckily Astronomy has been able to give a pretty good understanding of how the solar system originated and when.