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Clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes.
Cygnus A Stellar Mass Black Hole. Artist's illustration shows the black hole drawing mass from a companion blue star. The material forms a disc around the black hole before falling into it or being ejected by powerful jets.