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Black holes evaporate back into particles via Hawking radiation.

• ncmncm 5y ago
  But if there is nothing but black holes, the particles end up falling back in. Take that, Hawking!
  • planck01 5y ago
    Fun idea! But space keeps on expanding. So at some point most mass will be in black holes, but every black hole will be so far from every other black hole that even light will travel forever without ever being able to reach another.
  • ChrisLomont 5y ago
    No, eventually all black holes are expected to evaporate, with only particles floating around so spaced out no more black holes will form.