Why does the moon change shape? How much does the moon weigh? What color is the moon? Why does the Earth only have one moon? Why does the moon have holes? Where does the moon go when we can't see it? Why do we sometimes see the moon in the daytime? Why does the moon look like it's following you when you're in the car? Answers to your moon questions with John O'Meara, chief scientist at the W.M. Keck Observatory.
