Milne model

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The Milne model was a special-relativistic cosmological model proposed by Edward Arthur Milne in 1935.^[1] It is mathematically equivalent to a special case of the FLRW model in the limit of zero energy density and it obeys the cosmological principle^{[citation needed]}. The Milne model is also similar to Rindler space in that both are simple re-parameterizations of flat Minkowski space.

Since it features both zero energy density and maximally negative spatial curvature, the Milne model is inconsistent with cosmological observations^{[citation needed]}. Cosmologists actually observe the universe's density parameter to be consistent with unity and its curvature to be consistent with flatness.^[2]