### APS Physics

Shared publicly -When simulating the evolution of a clumpy universe, it's much easier to use Newton's laws as an approximation than to implement the full equations of general relativity. Now two teams have used some of the latest computational techniques to implement fully general relativistic simulations and found some potentially important differences with previous results.

Cosmologists have begun using fully relativistic models to understand the effects of inhomogeneous matter distribution on the evolution of the Universe.

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