M 2 is a globular star cluster in the constellation Aquarius. Diameter is about 175 light years. Contains about 150,000 stars. Distance to M 2 is about 38,000 light years. Discovered on September 11, 1746 by Jean-Dominique Maraldi as a nebula without stars. In 1760, William Herschel resolved it into stars. It is one of the richest and most compact globular clusters. Angular size 16'.
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