Milne vs. Minkowski metric

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30 replies · 17K views
rocco said:
Does it produce time dilation between the observers living in different cosmological epochs?
There is no such thing; it's not a well-defined concept. It's only well-defined between observers that can exchange round-trip light signals and use them to compare the elapsed times on their clocks. You can't exchange round-trip light signals with someone in the past.