As I have tried to point out, much of the confusion comes from Praxus' definition of the Universe - that which encompasses everything there is. Scientists, AFAIK, do not attribute such properties to the Universe.
It is simply a spatial boundary (that could be an imaginary one, much like a control surface bounding a control volume in classical thermodynamics) encompassing the known position of stars/galaxies. This boundary expands as seen from the red-shift. Thereby, the Universe, as understood in this limited scientific sense, expands.
It is simply a spatial boundary (that could be an imaginary one, much like a control surface bounding a control volume in classical thermodynamics) encompassing the known position of stars/galaxies. This boundary expands as seen from the red-shift. Thereby, the Universe, as understood in this limited scientific sense, expands.
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