Within the framework of special relativity theory, based on the geometrization principle, fundamental equations are derived for gravitational field, which necessarily involve the graviton mass. According to these equations, a homogeneous and isotropic Universe develops cyclically and can only be "planar". The existence of a large "latent" mass of substance in this Universe is predicted. The theory excludes the existence of "black holes".
Department of Quantum Theory and High-Energy Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia