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How is one black hole is larger than another?

  1. Feb 28, 2013 #1
    If black holes crush things into infinite density, shouldn't they all be the same size?
  2. jcsd
  3. Feb 28, 2013 #2


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    Black hole size is expressed in terms of its event horizon, which is proportionate to its mass.
  4. Feb 28, 2013 #3
    (Note that when I say "inside a black hole," I mean "inside the event horizon.")

    To elaborate, nobody really knows what on ... in the Universe happens inside a black hole, our current theories say they should collapse into 0 size, but some (a lot, from what I gather) think this just means our theories no longer apply perfectly in these situations.

    So trying to describe stuff in terms of what's going on inside a Black Hole is going to be pretty much pointless, so we have to describe stuff in terms of what can be measured from outside the black hole.
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