What cluster has a group of older stars located in the halo?

The cluster that contains a group of older stars located in the halo of the Milky Way is known as a globular cluster. These clusters are tightly bound together by gravity and typically contain stars that are very old, often several billion years. An example of a well-known globular cluster is M13, also known as the Hercules Cluster, which is situated in the constellation Hercules. Globular clusters are important for studying the early history of the galaxy and the formation of stars.