Black holes determine the evolution of the universe

In principle, they can only be recognized by what you can’t see – and yet black holes have a decisive effect on the evolution of the universe. That’s according to a new study by an international team of researchers from the University of Bologna and elsewhere. The work, published in Nature Astronomy, focuses on the Nest200047 system – a group of about 20 galaxies at a distance of about 200 million light-years from Earth. The central galaxy of this system hosts an active black hole, around which ...