Gravity as a phenomenon or noumenon can be cognized and used solely on the basis of new scientific paradigm, in which our world - the moving Cosmos - is the only entity that unites everything. Cosmos is considered as a tensor material-energy field (MEF). Abstract categories - space, time, matter, etc., were invented to describe the motion of the Cosmos, which has only one absolute property - to exist in motion, which is a non-mechanical periodic process of spherical drain-source (convergence-divergence) of matter-Cosmos to material bodies according to the Hubble-Plank factor, which is the cause of the formation, existence and movement of material bodies. This process of matter drain - material current, forming a difference in energy potentials, creates on equipotential surfaces around material bodies a tension-acceleration a (tensor material-energy field), explaining and gravitational motion of matter.