How does the expected lifespan of a typical open cluster contrast with that of a globular cluster?

Answer

Open clusters usually last a few hundred million years; globular clusters often exceed 12 billion years.

Open star clusters typically dissipate over a few hundred million years due to low stellar density, whereas globular clusters are tightly packed and can often exceed 12 billion years in age.

How does the expected lifespan of a typical open cluster contrast with that of a globular cluster?
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