The gravity cannon experiment is a very simple test that can provide decisive confirmation or falsification of all the different gravitational theories. Although it would have to be performed in the weightlessness of outer space, this experiment could otherwise be executed very easily and inexpensively. A Gold ball would loosely fit inside of a hole passing through the center of a solid, clear glass sphere. When a motionless ball is placed at the barrel’s mouth, the gravitational force and motion, whatever it might be it cause, is measured and recorded with a video camera.