What type of cluster is usually found in the galactic disk, particularly in the spiral arms?

Open clusters are typically found in the galactic disk, especially within the spiral arms of galaxies. These clusters are relatively young and contain a few hundred to a few thousand stars, all of which formed from the same molecular cloud. The stars in an open cluster are generally loosely packed and have a more chaotic distribution compared to globular clusters, which are much older, denser, and more spherical. The location of open clusters in the galactic disk and their association with the spiral arms highlight their formation from ongoing star formation processes, which are more active in these regions due to the presence of gas and dust. This characteristic differentiates them from other types of clusters found in the galaxy.