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Jun 20, 2019 at 4:24 comment added safesphere @descheleschilder Time starts and matter is created at the Big Bang. The opposite happens at a Black hole singularity.
May 25, 2019 at 21:57 comment added Deschele Schilder What exactly do you mean by end up? Do they cease to exist, while their energy fuels the curvature of spacetime?
May 25, 2019 at 13:35 history answered user4552 CC BY-SA 4.0