The
Coronet Cluster is an open cluster of stars. A cluster is a group of stars, formed at about the same time, which is gravitationally bound together. In an open cluster the gravitational attraction is weak, and it breaks up more easily than, say, the globular clusters which are tightly bound and can last for billions of years.
The Coronet Cluster is a good place for studying the early stages of star formation, because the region is a stellar nursery. It's much closer than the famous Orion nebula.