Einstein model

Einstein model

noun Astronomy.
Einstein's solution of the equations of general relativity with the cosmological constant. The solution describes an isotropic, homogeneous, static universe with no cosmological redshift.
Also called Einstein universe.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Einstein model is always a great word to know.
So is sidereal. Does it mean:
the angular distance of a heavenly body above the horizon
determined by or pertaining to the stars
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