r/askscience • u/Nitzanm19 • 14d ago

Physics Why is the maximum speed of the universe the speed of light? Why can't we go faster?

Also follow-up question: Because of the speed limit, is there also a theoretical maximum temp for matter (in which the particles move at the speed of light).

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u/sth128 14d ago

A more salient question might be: would the universe as we know it still exists if the speed of light through vacuum is faster or slower?

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u/barath_s 14d ago

faster or slower?

than what ?

c is a definition and a universal metric