Eridanus1 said:they are the oldest things in the galactic halo, having formed near the birth of the milky way. So with all the 10 odd billions of years of existence, i think they all should have gone supernova and destroyed the shape of the cluster.
So how do they stay gloubular in their shape?
Globular clusters are large, tightly-packed groups of stars that orbit around a common center of mass. They are found in the outer regions of galaxies and typically contain hundreds of thousands to millions of stars.
The exact formation process of globular clusters is still not fully understood, but it is believed that they formed early in the history of the universe through the collapse of gas and dust clouds. Some evidence also suggests that they may have formed from the merging of smaller star clusters.
Globular clusters are important objects for studying the formation and evolution of galaxies. They are also used as a standard candle for measuring distances in the universe, and their ages can provide insight into the age of the universe itself.
Not all galaxies have globular clusters, but they are more commonly found in larger galaxies. Smaller galaxies, such as dwarf galaxies, may not have enough mass to form and maintain globular clusters.
Scientists are currently studying globular clusters to better understand their formation, dynamics, and the properties of their constituent stars. They are also being used to test theories of galaxy formation and to search for evidence of dark matter within the clusters.