Iultiple choice questions Which one of the following heavenly bodies is the head of the solar system ? a. Earth c. Moon b. Sun d. Stars The Earth is the we live on. c. Star d. Solar System a. Planet b. Ship How many planets are in our solar system? a. 7 b. 9 The Sun and the moon rise in the a. East b. West c. 8 d. 6 c. South d. North