This property of gravity, along with many others, has never been explained until now. The more detailed and accurate the observations of our universe become, the more limiting and inaccurate our mathematical models have become. This theory will enable old models to be fully understood, and new and accurate models to be created. Before explaining what gravity is, it is first necessary to explain that it is not a force generated by matter. The weight of a body on the surface of a heavenly body is the reaction force caused by the acceleration of the surface of the heavenly body away from its centre.
Gravity is therefore nothing but the result of the general expansion of the universe.
We are not aware of that expansion because the rulers we currently measure the universe with are expanding as well. Gravity is not, in itself, a force, but merely a consequence of universal expansion. Universal expansion is not a new idea. We know that the universe began as a very small object that has expanded to its current size. We also know that it is continuing to expand.