The Great Hercules Cluster (M13) is considered by many to be the finest globular cluster in the northern half of the heavens. It contains an estimated 300,000 stars whose age is estimated to be
between 11 - 12 billion years. The stars are incredibly dense (by star standards) in the core region. As an example, if our planet was located in the core area we would see over 1000 stars at
night that were brighter than the brightest star we currently see - Sirius.