- #1
Jarvis323
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Suppose one day the expansion of the universe halted, and then reversed towards a big crunch.
1) Do the laws of physics change? How?
2) Would it be the case that the change from expanding to contracting occurs everywhere instantaneously, or could some parts of the universe begin contracting before others?
2) Supposing light propagates the same way that it does now, what would be the observational effects for objects that are far enough away, that the distances between us and them decreases faster than the speed of light?
1) Do the laws of physics change? How?
2) Would it be the case that the change from expanding to contracting occurs everywhere instantaneously, or could some parts of the universe begin contracting before others?
2) Supposing light propagates the same way that it does now, what would be the observational effects for objects that are far enough away, that the distances between us and them decreases faster than the speed of light?