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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).
5th century BC – Democritus proposes that the bright band in the night sky known as the Milky Way might consist of stars. 4th century BC – Aristotle believes the Milky Way to be caused by "the ignition of the fiery exhalation of some stars which were large, numerous and close together" and that the "ignition takes place in the upper part of the atmosphere, in the region of the world which ...
Lists of galaxies. List of galaxies; List of largest galaxies; 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
Download QR code; Print/export Download as PDF; Printable version; In other projects ... List of galaxies, general list of galaxies; Galaxies by type. List of spiral ...
The NASA/IPAC Extragalactic Database (NED) is an online astronomical database for astronomers that collates and cross-correlates astronomical information on extragalactic objects (galaxies, quasars, radio, x-ray and infrared sources, etc.). NED was created in the late 1980s by two Pasadena astronomers, George Helou and Barry F. Madore.
It lists 109 bright star clusters, nebulae, and galaxies, named C1 to C109, [8] and is a list of deep-sky objects of interest rather than a catalogue in the professional science sense. [clarification needed] Other deep-sky observing lists for amateur astronomers predated it.
The name is reserved to the IAU, but does not exist yet. 3SDSS — reserved by the Sloan Digital Sky Survey for future release. The name is reserved to the IAU, but does not exist yet. Se — Father Angelo Secchi (double stars) Se — Sersic (selected list of peculiar galaxies and groups of galaxies) See — T.J.J.
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)