I was reading about Kugelblitz on Wikipedia, and it says that if enough energy gets concentrated it leads to a black hole (from where nothing can escape - supposedly). So, if during the Big-Bang, when all the energy of the universe was in a really small region of space, why didn't it lead to a black hole and stay forever like that?
How is it possible that a Big Bang happened instead of becoming trapped as a Kugelblitz? [duplicate]
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1$\begingroup$ A bh is an object in space, but not space itself $\endgroup$– planetmakerCommented Mar 21, 2022 at 0:32
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$\begingroup$ Please see Did the Big Bang happen at a point? $\endgroup$– PM 2RingCommented Mar 21, 2022 at 8:24
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$\begingroup$ Related: Observable universe equals its Schwarzschild radius (event horizon)? $\endgroup$– pelaCommented Mar 21, 2022 at 10:20
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1 Answer
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While it is possible that some black holes (called primordial black holes) were formed in the early universe, in general most of the matter-energy did not collapse into these, since while extremely dense, early universe was also extremely uniform: there simply wasn't significant enough concentrations of mass-energy to form such black holes before the universe expanded rapidly in the inflation phase.
