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.
The Soul Nebula (IC is a fairly large emission nebula in the constellation Cassiopeia. It is often referred to as the “Embryo Nebula” because of its characteristic shape. Its neighbour is IC 1805 (the Heart Nebula). Photo by Azin Dark Skies.