A star cluster is a group of stars that are gravitationally bound and these tend to form old and the new stars. Hence the three main types of the star clusters are that of the globular, open and that of the apparent that are generally found n the core of the galaxy that may be halo or spiral or elliptical.
<u>The globular clusters have stars occurring in about 50 to 450 light-years from the other stars and are millions of years old arranged in their gravitational bounds, while the open clusters are those of the loosely and open spaced stars that are distributed over the time by the molecular clouds in the galaxy.
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The globular clusters are distant in the galactic halo and are orbiting in there highly elliptical orbits at the time may lead to the super star clusters. Whereas the open clusters are confined to the galactic plane with spiral arms.
