Globular Cluster Messier 4 (M4) (IMAGE)

NASA/Goddard Space Flight Center

Globular Cluster Messier 4 (M4)

Caption

A Hubble Space Telescope image of the globular star cluster, Messier 4. The cluster is a dense collection of several hundred thousand stars. Astronomers suspect that an intermediate-mass black hole, weighing as much as 800 times the mass of our Sun, is lurking, unseen, at its core.

Credit

ESA/Hubble, NASA

Usage Restrictions

No restrictions.

License

Public Domain

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