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M4 Globular Cluster and Surrounding Nebula

Messier 4

The globular cluster M4 is located in the heart of the constellation Scorpius. This cluster sits relatively close to the red super-giant star, Antares. In the image, Antares is located just off of the left edge and is responsible for illuminating the light colored nebula in the background. There is also a bright star in the upper right corner just off of the edge of the image as well named Alnivat. Sitting in the upper left corner of the image is the small globular cluster NGC 6144.