Cosmological principle
Cosmological principle is an assumption that, on sufficiently large scales, the universe is homogeneous and isotropic. It is used as a simplifying premise in many cosmological models.
The cosmological principle is discussed in cosmology and theoretical physics.
Status
The cosmological principle is supported by large-scale observations of galaxy distributions and background radiation, within statistical limits. Deviations and scale-dependent effects are examined in observational and theoretical studies.