How did Einstein find the mass of the whole universe?
Einstein did not find the mass of the universe but he provided science with a theory that allowed many cosmologists and theorists to develop models of how the universe came into being and has evolved since. This theory of Einstein’s is the theory of General Relativity (1915), which is a cause and effect theory. The theory describes the fabric of space-time as a medium that may be distorted by the presence of mass and energy. In an earlier theory (The Special Theory of Relativity (1905)), Einstein had related mass and energy in the famous equation: – E = mc² From this concept, he described the curvature or distortion of space-time as due to the total sum of mass-energy present within the region of distorted space. It is the curvature of space-time we call gravity. Thus, our planet follows the ‘straightest’ path or path of least action whilst it orbits the mutually curved space around the Sun. An object falling to earth, under the pull of gravity, is following the curvature of space in t
