There are two main types of star clusters:
* Open clusters: These are relatively loose groups of a few hundred to a few thousand stars, typically found in the disk of the Milky Way galaxy. They are younger than globular clusters and have a less concentrated appearance. Examples include the Pleiades (Seven Sisters) and the Hyades.
* Globular clusters: These are densely packed, spherical collections of tens of thousands to millions of stars, typically found in the halo of the Milky Way galaxy. They are older than open clusters and have a much more concentrated appearance. Examples include M13 (Hercules Cluster) and 47 Tucanae.
While we perceive star clusters as being at the same distance from us, it's important to remember that this is an apparent distance due to their relative proximity and our perspective. In reality, stars within a cluster can have slight variations in their actual distances from Earth.
