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.
Vampire stars are more common than astronomers previously thought according to a new study. Vampire stars are Type O stars in a binary system that suck gas from their companion stars to prolong their .
Herschel's Andromeda Image Credit: ESA/Herschel/PACS & SPIRE Consortium, O. Krause, HSC, H. Linz Explanation: This infrared view from the Herschel Space Observatory explores the Andromeda Galaxy, the closest large spiral galaxy to our own Milky Way.