Theories of Cosmology

In Einstein’s theory of General Relativity, a key concept stressed was that gravity was not a field like Newton proclaimed. Rather it was a distortion of time and space itself. John Wheeler put it well when he said, "Matter tells space how to curve, and space tells matter how to move."

Shortly after the introduction of his theory, a number of scientists, including Einstein, attempted to apply it to new gravitational dynamics of the universe as a whole. An assumption was made as a result and the Cosmological Principle was founded. It stated that matter and radiation, on a large scale, was evenly distributed amongst the universe as expansion was uniform in all directions of the universe.