cosmological principle

American  

noun

Astronomy.

1. the hypothesis that the universe is isotropic and homogeneous on a large scale: used to simplify the equations of general relativity for models of the universe.

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cosmological principle British  

noun

1. astronomy the theory that the universe is uniform, homogenous, and isotropic, and therefore appears the same from any position

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Example Sentences

Such large structures should not exist according to one of the guiding principles of astronomy, called the cosmological principle.

From BBC

The Big Ring is by no means the first likely violation of the cosmological principle and so suggests that there is another, yet to be discovered, factor at play.

From BBC

The centerpiece of this approach was a remarkable book published in 1986 and co-authored with physicist Frank Tipler entitled The Anthropic Cosmological Principle.

From Scientific American

What cosmological principle would be offended if we changed that number to 15 or 17?

From Washington Post

Or more specifically, the “strong” version of this cosmological principle which roughly states that in the universe as we know it, intelligent life must be inevitable.

From Forbes