Black holes don't "eat" surrounding objects. Their gravity is no different from the gravity of any other object of the same mass. This hole has a mass between 1

Black holes don't "eat" surrounding objects. Their gravity is no different from the gravity of any other object of the same mass. This hole has a mass between 10 and 100 million solar masses; that's about the size of a dwarf galaxy. So its gravity would be no stronger than a similarly sized dwarf galaxy. We are in no danger of having the universe eaten by dwarf galaxies.