Hubble discovers cluster of clusters
Over 20,000 globular clusters have been spotted in recent images of the Coma Cluster, taken by the Hubble Space Telescope. The find will help astronomers track dark matter throughout the cluster.
Globular clusters are diffuse balls of stars found in the outer regions of galaxies. The Hubble images captured 22,426 globular clusters spread across the Coma Cluster’s 1,000 or so galaxies, 300 million lightyears away.
As globular clusters are smaller and more numerous than galaxies, these images will help researchers map the Coma Cluster’s gravitational layout. As gravity within a cluster is dependent on both visible and dark matter, such maps will help astronomers understand the role of dark matter within the cluster.
A Hubble image showing just a few of the 22,426 globular clusters it captured in the immense Coma Cluster