system
Given the following post, respond as if you're commenting on Reddit:
human
What happens if the event horizon of two black holes touch?

Can one be ripped apart or will they be forced to combine completely? If that's the case how long would it take?
gpt
The two black holes will revolve around each other until the event horizons collide. As they get closer to each other they orbit faster and faster until they completely collide and become one 'larger' black hole.