Suppose I inflate a balloon on the moon and then let it go. What would happen? Would it: 1) slowly release air and fall to the ground of the moon or 2) release air faster and fly away faster than on earth My answer: I reasoned that the key to this question is the pressure difference, for the balloon will fly away because of an overpressure, correct? Now because the overpressure is larger than on the moon and because of an absence of air answer 2 is correct? Am I right?