Scavenger Hunt!
  The Sun T he Earth is a large ball - it just looks flat because you can only see a tiny part of it at one time. The Sun and planets are also round because when they formed, gravity pulled all their parts as close to their centers as possible.


 

The Planets T hough they're all round, planets are NOT all the same size. Mercury would be as big as an orange, and Jupiter would be the size of a small car.

Size Up the Planets