Engineering Physics Annotation << Back THE ORIGIN OF THE MICROWAVE COSMIC BACKGROUND A.A. BARENBAUM The microwave cosmic background and the Hubble law are explained by the interaction of light with cosmic gravitational fi elds. The linear dependence of redshifts on the distance in the Hubble law is due to the fulfi llment for photons in cosmos of three fundamental laws of physics: of energy conservation, constant speed of light and Newton’s gravity law. In this, on the way from distant galaxies to the Earth, the photons exchange quanta of the microwave background radiation with the cosmic space according to Planck’s law. The energy of these quanta corresponds to the temperature of the cosmic space, which is determined by the energy density of the optical radiation of stars. A model was developed to substantiate these conclusions. The model is based on a balanced cycle of baryonic matter, which is accompanied by the destruction of stars in galaxies and the formation of new generations of stars from their gas-dust products. This cycle in the Metagalaxy is in dynamic equilibrium, at which the density of energy released during the synthesis of 4He from hydrogen in young stars and then displayed by them in the optical range coincides with the energy density of the microwave cosmic background. Other outputs of the model are discussed. Key words: microwave cosmic background, Hubble law, Galactocentric paradigm, circulation of baryonic matter in Metagalaxy. DOI: 10.25791/infizik.01.2019.392 Contacts: E-mail: azary@mail.ru Pp. 39-48.