The Duality of Time Theory

Nevertheless, by applying his theory to the Universe as a whole, Einstein had initiated the field of relativistic cosmology. In 1927, Lemaitre used the above solutions to formulate the earliest version of the Big Bang models, in which our Universe is said to have evolved from an extremely hot and dense earlier state. We shall discuss the Big Bang and other important cosmological models in sections 6.1, 6.2 and 6.3 below.