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Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
For instance, Markarian galaxies, named after Benjamin Markarian, are galaxies with excess blue and ultraviolet emission; [5] galaxies in the Atlas of Peculiar Galaxies are assigned an Arp number after Halton Arp who produced the catalog; etc. Objects in these catalogs are excluded below, except in cases where they carry the name of an ...
List of galaxies with richest globular cluster systems; List of nearest galaxies; List of galaxies named after people; List of spiral galaxies; List of polar-ring galaxies; List of ring galaxies; List of quasars; Satellite galaxies. List of satellite galaxies of the Milky Way; List of Andromeda's satellite galaxies; List of Triangulum's ...
Galaxies by type. List of spiral galaxies; List of ring galaxies; List of polar-ring galaxies; List of quasars; Galaxies by association. List of largest galaxies; List of nearest galaxies; Satellite galaxies of the Milky Way; Other characteristics. List of galaxies named after people; List of galaxies with richest globular cluster systems
Stars may have multiple proper names, as many different cultures named them independently. Polaris, for example, has also been known by the names Alruccabah, Angel Stern, Cynosura, the Lodestar, Mismar, Navigatoria, Phoenice, the Pole Star, the Star of Arcady, Tramontana and Yilduz at various times and places by different cultures in human history.
Also referred to as the NGC 7331 Group, after the brightest member of the group. [13] Leo Triplet: Named for the fact it contains only three galaxies. This small group of galaxies lies in the constellation Leo. Markarian's Chain: This stretch of galaxies forms part of the Virgo Cluster. Robert's Quartet
The observable universe contains as many as an estimated 2 trillion galaxies [36] [37] [38] and, overall, as many as an estimated 10 24 stars [39] [40] – more stars (and, potentially, Earth-like planets) than all the grains of beach sand on planet Earth. [41] [42] [43] Other estimates are in the hundreds of billions rather than trillions.
Pages for logged out editors learn more. Contributions; Talk; List of galaxies named after people