  Relying on the obtained results in Rev.[1](physics/0505035), we derive the
formula relating the red-shift of light signals coming from distant galaxies to
the distance of these galaxies from us and the time of detecting of these light
signals. The red-shift coefficient, instead of the Hubble parameter, is
introduced. It varies with time and positive at all times. Its nowadays value
equals the Hubble parameter. It increases forever as time is running from the
past to the future. The derived formula enables us to estimate the nowadays
increasing rate of the red-shift coefficient, which is nothing but the nowadays
value of the "acceleration of the expansion of the Universe".
