Globular Cluster Messier 79

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In this image, taken by the Hubble Space Telescope, you can see Messier 79 (NGC 1904), a globular star cluster in the constellation of Lepus (The Hare, https://goo.gl/zGO0Vb), about 40,000 light-years away from Earth.

While only 120 light-years in diameter, it contains about 150,000 stars. It is possible that Messier 79 was caught by our Milky Way Galaxy from the Canis Major Dwarf Galaxy (https://goo.gl/SXYxP2), a dwarf galaxy that is currently in the process of being absorbed by the Milky Way.

Messier 79 was discovered in _1780_by the French astronomer Pierre Méchain (https://goo.gl/cGcCMS).

More information here:
https://www.spacetelescope.org/images/potw1751a/
https://www.nasa.gov/feature/goddard/2017/messier-79
https://en.wikipedia.org/wiki/Messier_79

What is a globular cluster?

A globular cluster is a spherical collection of up to millions of stars held together by their own gravitational forces and orbiting a galaxy core as a satellite. They have very high stellar densities at their core. More information here:
http://en.wikipedia.org/wiki/Globular_cluster

Image credit: Messier 79 NASA and ESA Acknowledgement: S. Djorgovski (Caltech) and F. Ferraro (University of Bologna) https://goo.gl/kixJqX CC BY 4.0 https://goo.gl/hNRHCd

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