published in space
The Hercules Globular Cluster (M13)
The Hercules Globular Cluster (also known as M13 from its position in the Messier Catalogue, or as NGC6205) is a globular cluster that is visible in the constellation Hercules, at a distance of about 25,000 light years from the Earth.
It consists of various hundreds of thousands of stars. The estimated age is between 12 and 14 billion years. Even though it is remarkably far from the Earth, it is however the most luminous globular cluster in the northern hemisphere, and this implies that its brightness must be very great, superior to that of 300000 suns. Credits: Marco Burali, Tiziano Capecchi, Marco Mancini (Osservatorio MTM)