Globular vs. open clusters
						• Open Clusters – Typically a few thousand stars – Not gravitationally bound – Often contain young stars – Concentrated in plane of Milky Way – Distributed “randomly” around the circle of the Milky Way • Globular Clusters – Typically >hundred thousand stars – Only contain older stars – Are gravitationally bound – Not strongly concentrated in plane of Milky Way – Not randomly distributed around the circle of the Milky Way – more towards Sagittarius