The Theory of Special Relativity as part of the educational process: not for the sake of understanding the theory itself, but in using Einstein’s particular discovery as a case study to demonstrate and walk people through real human thinking.
The shape of the universe is determined by a struggle between the momentum of expansion and the pull of gravity. The rate of expansion is expressed by the Hubble Constant, Ho, while the strength of gravity depends on the density and pressure of the matter in the universe.
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