Scientific cosmology is often defined as the science of the universe as a whole. In it, the terms "universe" and "cosmos" are usually applied as synonyms to the expression "entire world".[twelve] One prevalent definition of the planet/universe located in this field is as "[t]he totality of all Room and time; https://chancejnnmm.tokka-blog.com/36587334/namthuanloi-things-to-know-before-you-buy