This is your Solar System:

This is your Solar System on black holes:

Any questions?

It seems that a black hole was ejected from its galaxy by another black hole.  This gives some insight as to what happens when an immovable object meets another immovable object. That isn’t the important bit, though:

This discovery… implies that there may be supermassive black holes moving through the universe outside of galaxies. And we currently have no way of knowing that they’re there.

Does that mean we could all be sitting around, minding our own business, and suddenly we’re all crushed to a point of infinite density?  ‘Cause that’s enough to ruin my whole day.