The rich and dense stellar web represents a massive globular cluster. It is a gravity-related star collection spinning along the Milky Way. Ball type is more dense and spherical than open clusters, like the famous Pleiades. Usually they are inhabited by hundreds of thousands of stars that appeared about the same time.
The analysis showed that the globular cluster NGC 6139 sheltered an aging star population. The age of most globular clusters in the Milky Way reaches more than 10 billion years, so they contain one of the oldest stars that appeared in the early history of the galaxy. But their role in the process of galactic evolution is still not fully known.
This cluster is viewed in the direction of the galactic center, on the territory of Scorpio. Hubble has studied this area many times, observing the Butterfly Nebula (double star system) and other dazzling globular clusters.