Metal-poor Globular Star Cluster RBC EXT8 (IMAGE) W. M. Keck Observatory Caption The RBC EXT8 globular cluster orbits the outskirts of the Andromeda Galaxy, a close companion to our Milky Way Galaxy, located 2.5 million light-years from Earth. Credit ESASky/CFHT 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.