Simulation of NGC6101 with black holes (IMAGE) University of Surrey Caption This is a picture from the computer simulation of the cluster NGC 6101 at its current age, this time with all its black holes kept in the cluster at their creation time: The cluster from the simulation shows the same puffed up distribution of stars as can be found in the Hubble Space Telescope image. The black holes, being the heaviest component in the cluster, sink over the course of the clusters evolution into the cluster center, thereby pushing out every observable star into the clusters outer regions. Credit University of Surrey 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.