Via IFLScience: ‘Quasars are some of the brightest things known, and at the center of these super luminous nuclei of galaxies are very active supermassive black holes. The black hole is surrounded by a spinning disc of extremely hot material, which gets spewed out in long jets all along the quasar’s axis of rotation.
Quasars separated by billions of light-years are lined up in a mysterious way. Astronomers looking at nearly 100 quasars have discovered that the central black holes of these ultra-bright, faraway galaxies have rotational axes that are aligned with each other. These alignments are the largest known in the universe.’