Artist Impression (IMAGE) National Radio Astronomy Observatory Caption Artist impression of W2246-0526, the most luminous known galaxy, and three companion galaxies. Credit NRAO/AUI/NSF, S. Dagnello Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.