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Within relativity (both special and general), changes of reference frames can change both the notions of space and of time, with one depending on the other as well. As a consequence, it is necessary to treat both concepts in a unified manner. Hence the term spacetime.
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Black Hole - Between event horizon and singularity
I'm just looking for the momentary point of view about this hole in the spacetime and the newest scientific knowledge about it.
Thanks for sources and answers. …