How do globular clusters contrast visually and structurally with open clusters?

Answer

Globular clusters are tightly packed and roughly spherical, unlike sprawling open clusters.

Globular clusters present a distinct, compact, and roughly spherical arrangement, contrasting sharply with open clusters, which are generally younger and less densely packed, often exhibiting more irregular forms.

How do globular clusters contrast visually and structurally with open clusters?
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