Perfect Cosmological Principle
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The Perfect Cosmological Principle states that the Universe is homogenous and isotropic in space and time. In this view the universe looks the same everywhere (on the large scale) as it always has and always will. It is the principle underpinning Steady State theory and Chaotic inflation theory.
The Perfect Cosmological Principle is an extension of the Cosmological Principle, which accepts that the universe changes its gross feature with time, but not in space.
Much of the Steady State theory was later replaced by the Big Bang theory.
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