Open Clusters
List of the most prominent open clusters in our corner of the galaxy.
www.anzwers.org/free/universe/openclus.html
Open Clusters and Galactic Structure
Project studing open cluster systems because of the insights they provide for galaxy dynamics.
www.astro.iag.usp.br/~wilton
Open Star Clusters
Related groups of stars held together by mutual gravitational attraction.
www.seds.org/messier/open.html
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