Galaxy Growth (1 of 2) (IMAGE) Durham University Caption This is an artist's representation showing outflow from a supermassive black hole inside the middle of a galaxy. Credit NASA/CXC/M.Weiss 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.