Cosmology is a division of astronomy that concern with the source and evolution of the world, from the Big Bang to present and on into the future. According to NASA, the explanation of cosmology is "the experimental research of the large scale properties of the whole world." Cosmologists confound over fascinating approaches like string theory, dark matter and dark energy and whether there is one universe or many (sometimes called the multiverse). While other facets of astronomy compromise with single objects and phenomena or collections of objects, cosmology stretch the whole universe from birth to death, with a wealth of riddle at every moment.  Physical cosmology was mold through both mathematics and observation in an scrutiny of the entire world. Metaphysical cosmology may be illustrates as the placing of humans in the universe in relationship to all other entities. Cosmology differs from astronomy in that the former is concerned with the Universe as a whole while the latter deals with individual celestial objects. Modern physical cosmology is dominated by the Big Bang theory, which attempts to bring together observational astronomy and particle physics; more specifically, a standard parameterization of the Big Bang with dark matter and dark energy, known as the Lambda-CDM model.

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