Ok, this might seem like a silly question, but I just want to get it straight. Just tell me if anything I am saying is wrong, and answer the best you can. Ok, the moon has no air, because it has no atmosphere correct? And the reason for no atmosphere is because the moon is biologically non-active, and the moon does not have enough mass to keep things from escaping the moon, including gases, which the moon does not give off because its biologically dead ? The moon is simply apart of the vacuum of space because of the atmosphere correct? So, the reason someone on the moon would not drift off into space if they jumped in the air is because the moon still of course has gravity, as everything with mass has gravity. Now its your turn :) Thanks guys!