Did you know that ten tons of meteroites hit the earth every day but when they hit the earth they are the size of a grain of sand. Bill Nye knows about space and I am going to share what I learned from him. I learned that the earth's north star Polaris will change in 12 000 years and the new north star will be called Vega. Also did you know that there are billions of stars, and that stars are made up of the same things as we are, we are made of up of adams and cells just like stars. Sometimes you will see a star but it really isn't there because there is a delay in the time between you and the star. One light year is 9.5 trillion years. Light travels at 300 000 km every second. Surcumfrence is the distance around the earth is 40 00 km. A contellation is a group or stars we have given a name to help us find places.