eli5 Is it correct to think of events happening on the far side of the universe or in a different galaxy as occurring “at the same time”?
In: Physics
Check out The Order of Time, by Carlo Rovelli. He does an amazing job of addressing a lot of this and how we got from Aristotle’s view of “time” all the way through the modern physics definition with respect to relativity and quantum mechanics. (It also debunks some of the flat-out wrong assertions in a lot of the other comments.)
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