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Mar 2, 2016 at 19:02 comment added Javier @Numrok: I never said that we impose that the metric goes to Minkowski at infinity; for the black holes we're talking about here, it goes to flat spacetime at spatial infinity but not at temporal infinity. The second paragraph is just elaboration, the first and last are more important.
Mar 2, 2016 at 15:57 comment added Wolpertinger thank you for your answer. I think your are pointing out what I mean by that we impose that the metric goes to Minkowski metric at infinity. but why is that? what makes us believe this is true for modelling e.g. black holes in our universe? Is there a theoretical reason? Or experimental evidence?
Mar 1, 2016 at 20:23 history answered Javier CC BY-SA 3.0