Floersh, you mentioned how a bucket of water is spun and the centerial force is what kept the water inside the bucket (great example by the way). Now I was wondering, would that example also apply to a great sphere of mass with it's own atmosphere. See the reason I post this post is because I also put much thought into it and thought to myself "If the theory I'm concieving is true then everything on earth would be thrown into outer space." until I remembered "The earth has an atmosphere" meaning that there is pressure, and that pressure maybe what could be holding us down on earth, could pressure be the very key to the force of gravity. (Please correct me if I'm am wrong, Humans do learn from their mistakes).
Well someguy, not to disapoint you, but you are half right about what my point is. What I'm actually trying to say is that mass by itself cannot create gravity. Yet according to newton's law of gravity, (correct me if I'm wrong) Gravity is dependent on MASS. So yeah your kind of are right someguy about how there is no known force of gravity created without mass.