Galaxy clusters (IMAGE) University of California - Riverside Caption Like Goldilocks, the team compared the number of galaxy clusters they measured with predictions from numerical simulations to determine which answer was "just right." Credit Mohamed Abdullah, UC Riverside. 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.