An illustration of a supermassive-black-hole-powered quasar. A map of line emissions of hydrogen and oxygen , in the PJ308-21 system, shown after masking the light from the central quasar . — Nasa/Inaf/FileAstronomers have observed a dramatic "dance" between a supermassive black hole...from The News International - Sci-Tech https://ift.tt/jcz7eAr