Post-starburst galaxy 0570 (IMAGE) National Radio Astronomy Observatory Caption Post-starburst galaxies were previously believed to expel all of their molecular gas, a behavior that caused them to stop forming stars. New observations have revealed that these galaxies actually hold onto and condense star-forming fuel near their centers, and then don’t use it to form stars. Here, radio data of PSB 0570.537.52266 overlaid on optical images from the Hubble Space Telescope, show the dense collection of gas near the center of the galaxy. Credit ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO/AUI/NSF) Usage Restrictions No restrictions. License Public Domain 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.