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Thanks for that. I guess I had always assumed that over a long enough time frame, black holes would eventually swallow everything.

• IAmBroom 1y ago
  In a static universe, they absolutely would. In a shrinking univers, they absolutely would. (But neither of these things would necessarily have already happened.) In an expanding universe, some things will eventually so far away from black holes that they won't get "eaten". Also, they won't see them anymore, nor most of the rest of the universe. That third option is, to our best knowledge, the one we live in. An interesting implication is that, if intelligent life evolves several billion years from now in any given galaxy, it's galaxy might be so far away from its nearest neighbors that light from them will never reach it. That civilization's Hubble will never be able to test their crazy theory that "there could be more than one galaxy in the universe".