Solar system wall clockThe Solar System Clock vividly restores the connection between time and planet rotation. The little ball on the second hand represents the moon, the ball on the minute hand represents the earth and the big ball on the hour hand represents the sun. The dierent rotation speed of the pointer vividly restores the moving status of three stars. The 12 golden star patterns located on dierent place on clock represent 12 hour scales. Looking from the front