system
Given the following post, respond as if you're commenting on Reddit:
human
Do black holes move in space like planets and stars do? and what would happen if a black hole ran into another black hole?
gpt
>Do black holes move in space like planets and stars do?

Yes.

>and what would happen if a black hole ran into another black hole?

Not quite sure (beyond they would merge into one big one) and we've never seen it, but models suggest a lot of energy would be released.