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Artist’s impression of a quasar whose core region was literally set in motion in the early universe. While galaxies often merged with each other at that time, large amounts of matter were thrown into the centers of the galaxies. When matter orbits the supermassive black hole in the center of a galaxy, energy is released, which explains the enormous brightness of an active galaxy. The quasar can therefore still be observed from a great distance today. Credit: ESO / M. Kornmesser