Click on the image for a full resolution version   Messier 30 (M30 for short) is not only one of the 28 globular clusters in the Messier Catalog. It is also one of the largest (150,000 stars with 160,000 solar masses). An amazing characteristic of this cluster is its “Blue Stragglers”. In a globular cluster, … Continue reading Messier 30. NGC 7099