  We construct a general relativity formula for the law of gravity for material
bodies. The formula contains three numeric parameters that are to be determined
experimentally. If they are chosen from symmetry considerations, then the
theory that appears is close to the theory of electrodynamics: the
gravitational field is given by two vector fields, one can write the
energy-momentum tensor, we give an answer on the question what a gravitational
wave is. Going to infinity, this wave carries with it the negative energy.
