|MadSci Network: Astronomy|
If one considers that time is simply motion of matter through space, would time or space exist if the universe consisted completely of matter, with no free energy? It seems that time could not exist because time requires motion through space, and motion is not possible without energy; therefore, time would seem impossible. What would be the case if the universe were entirely free energy, with no matter? Would this mean that time and space could not exist, because there could not be space without matter, and there cannot be time without movement of matter through space? Or could time exist because energy moves? But then there would be nothing to move through, since space would not exist? Do time and space require each other's existence?
Re: Would time and space exist if the universe were entirely energy or matter?
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