I wonder what would happen if one black hole shot through another one at high relativistic velocity, instead of spiralling towards one another.
replies(4):
Because nothing can ever leave the event horizon black holes are essentially perfectly sticky.
If Hawking radiation turns out to be non existent, yes.
Also, we don't know if it's possible to 'crack' open a black hole. If anything, another black hole might be the perfect instrument for doing this.