After learning that ρ (Universal Density of Potential Energy), varies from one place to another, causing a change in the time measured in the clocks, inversely proportional to the square root of the value of ρ, "Ref. [1]", and that in expanding universe, locally, Universal Density of Potential Energy will decrease in the inverse proportion of that expansion. This decrease increases the G value indicating that the less the Universal Density of Potential Energy, the better the gravitational radiation occurs, thus causing its increase in the direct proportion of the expansion of the Universe, "Ref. [1]". Following the same principle, the Magnetic Permeability of the Vacuum should also increase, allowing a better propagation of electromagnetic waves. The increase in this permeability will allow greater action by the nuclei of the atoms on the electrons. Applying the expression of the atomic ray through quantum mechanics, we conclude that the size of the atoms will decrease with the expansion of the Universe, that is, it will vary in the inverse proportion of that expansion. This finding also implies that the stars are shrinking, which requires a New approach to the removal of the Moon from the Earth. The age of the Universe. Hubble Constant, "Ref. [1].

Universe, gravitation, potential, gravity, velocity, mass, physics, variable