1. What is the force that makes an airplane/SR-71 compress as it goes faster? Is this same force what gravity is? Does the counter clockwise spin of the earth create gravity? If we spun faster would gravity be greater? If we stopped spinning would the earth expand like a fish being pulled up from the depths of the ocean? If I spun a plate really fast the acceleration would want to pull it apart, what is the reaction that occurs causing the plate to compress? Whatever it is it must be greater then the acceleration force. 2. Does the sun rotate?