Cosmology may be a branch of astronomy concerned with the studies of the origin and evolution of the universe, from the large Bang to today and on into the longer term . it's the scientific study of the origin, evolution, and eventual fate of the universe. Physical cosmology is that the scientific study of the universe's origin, its large-scale structures and dynamics, and its ultimate fate, also because the laws of science that govern these areas. Physical cosmology is studied by scientists, like astronomers and physicists, also as philosophers, like metaphysicians, philosophers of physics, and philosophers of space and time. due to this shared scope with philosophy, theories in physical cosmology may include both scientific and non-scientific propositions, and should depend on assumptions that can't be tested. Cosmology differs from astronomy therein the previous cares with the Universe as an entire while the latter deals with individual celestial objects.