Melotte catalogue
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The Melotte catalogue is a catalogue of 245 star clusters compiled by British astronomer Philibert Jacques Melotte. It was published in 1915 as A Catalogue of Star Clusters shown on Franklin-Adams Cha
Melotte 20, an open cluster in the constellation Perseus that was first catalogued by Philibert Jacques Melotte in 1915.
Globular cluster
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A globular cluster is a spheroidal conglomeration of stars that is bound together by gravity, with a higher concentration of stars towards its center. It can contain anywhere from tens of thousands to
Messier 2
NGC 7006 is a highly concentrated, Class I globular cluster.
The Messier 80 globular cluster in the constellation Scorpius is located about 30,000 light-years from the Sun and contains hundreds of thousands of stars.
NGC 2808 contains three distinct generations of stars. NASA image