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How do open clusters form compared to globular clusters?

    Open clusters and globular clusters are formed through different processes. Open clusters are formed from the gravitational collapse of a molecular cloud, which is a region of interstellar gas and dust. As the molecular cloud contracts, it fragments and forms multiple clumps of gas and dust. These clumps then collapse further under gravity and begin to form stars. The stars in an open cluster are typically formed at the same time and from the same molecular cloud. They remain loosely bound together by their mutual gravitational attraction.

    On the other hand, globular clusters are believed to form differently. They are thought to originate from the early stages of galaxy formation. When a galaxy forms, it contains a large concentration of gas and dust. This gas and dust collapse under gravity to form the central core of the galaxy. As the core forms, some of the gas and dust in the outer regions of the core coalesce to form globular clusters. These clusters contain thousands to millions of stars, all formed at roughly the same time.

    In summary, open clusters form from the gravitational collapse of a molecular cloud, while globular clusters form from the coalescence of gas and dust during the formation of a galaxy.


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