Homogeneous Cosmology

Cosmology is the theory of the universe as a whole. We distinguish between homogeneous and inhomogeneous cosmology. Homogeneous cosmology is the “classical” form, in which the cosmos is assumed to be completely homogeneous and isotropic. The Robertson-Walker metric is used in this case. Inhomogeneous cosmology takes into account density and temperature fluctuations. We begin with homogeneous cosmology.