This illustration shows two spiral galaxies - each with supermassive black holes at their center - as they are about to collide and form an elliptical galaxy. New research shows that galaxies' dark matter halos influence these mergers and the resulting growth of supermassive black holes.(Image courtesy NASA/CXC/M.Weiss
Dark Matter Guides Growth of Supermassive Black Holes
NASA/CXC/M. Weiss