About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 28. Chapters: Globular cluster, List of globular clusters, Omega Centauri, 47 Tucanae, Terzan 5, NGC 5466, Terzan 7, Messier 22, Messier 4, Messier 13, Messier 15, Segue 1, Messier 54, Mayall II, Palomar 12, Messier 71, Willman 1, Messier 10, Core collapse, NGC 2419, NGC 6397, Messier 80, Messier 14, Messier 3, GCl 38, Messier 12, Messier 72, Messier 92, Messier 79, Messier 56, Messier 28, NGC 4833, Messier 107, NGC 2808, NGC 288, Messier 69, Messier 62, Messier 75, Messier 19, Messier 70, Tidal shock, Messier 68, Messier 30, Messier 53, Messier 55, Palomar 5, NGC 1818, NGC 3201, NGC 6934, NGC 6712, Shapley-Sawyer Concentration Class, Segue 3, NGC 1851, Palomar 6, NGC 2257, NGC 1049, NGC 5694, Mercer 3, NGC 5824, Palomar 4, NGC 6752, NGC 7006, NGC 1261, NGC 6760, NGC 6522, NGC 6723, NGC 5986, NGC 1806, 2MASS-GC02, NGC 6539. Excerpt: A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers. The name of this category of star cluster is derived from the Latin globulus-a small sphere. A globular cluster is sometimes known more simply as a globular. Globular clusters, which are found in the halo of a galaxy, contain considerably more stars and are much older than the less dense galactic, or open clusters, which are found in the disk. Globular clusters are fairly common; there are about 150 to 158 currently known globular clusters in the Milky Way, with perhaps 10 to 20 more still undiscovered. Large galaxies can have more: Andromeda, for instance, may have as many as 500. Some giant elliptical galaxies, particularly those at the centers of galaxy clusters, such as M87, have as many as 13,000 globular clusters. These globular clusters orbit the g...
