When taking into consideration the particle nature of the light emitted from the surfaces of stars instead of the wave nature in the relativistic Doppler effect, we find that the distribution of the momentum of the photons on the surface of the star in the direction of motion is not symmetrical with the opposite direction, but decreases by the amount of negative space momentum according to the inverse relativity model, Which makes us have a difference in the radiation impulse forces (action forces) and radiation pressure (reaction forces) on the surfaces of stars, this difference or the resultant force leads to pushing the star or galaxy with increasing acceleration, The characteristics of the negative radiation of stars and galaxies are consistent with the properties of dark energy, as it has momentum and produces impulse forces and radiation pressure on the surfaces of stars or galaxies, It works on the motion of galaxies according to the Hubble-Lematter law, It represents a source of energy lost in the redshift