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Size (left) and distance (right) of a few well-known galaxies put to scale. The following is a list of notable galaxies.. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in the Local Supercluster, and an estimated 100 billion in all of the observable universe.
Lists of galaxies. Look up galaxy in Wiktionary, the free dictionary. A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek galaxias, literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.
List of nearest galaxies. This is a list of known galaxies within 3.8 megaparsecs (12.4 million light-years) of the Solar System, in ascending order of heliocentric distance, or the distance to the Sun. This encompasses about 50 major Local Group galaxies, and some that are members of neighboring galaxy groups, the M81 Group and the Centaurus A ...
Spiral galaxies. Below is a list of notable spiral galaxies with their own articles. The classification column refers to the galaxy morphological classification used by astronomers to describe galaxy structure. Designation. Picture. Classification. Constellation. Apparent Magnitude. Comet Galaxy.
Named for its size, El Gordo ("the fat one") is the biggest cluster found in the distant universe (at its distance and beyond), at the time of discovery in 2011, with a mass of 3 quadrillion suns. The second most massive galaxy cluster next to El Gordo is RCS2 J2327, a galaxy cluster with the mass of 2 quadrillion suns.
This list uses the mean cosmological parameters of the Lambda-CDM model based on results from the 2015 Planck collaboration, where H 0 = 67.74 km/s/Mpc, Ω Λ = 0.6911, and Ω m = 0.3089. [3] Due to different techniques, each figure listed on the galaxies has varying degrees of confidence in them.
L. List of largest galaxies. List of astronomical objects named after people.
List of the largest known stars in the Milky Way Star name Solar radius (R ☉) Method [a] Notes Orbit of Saturn: 2,047 – 2,049.9 [8] [b] Reported for reference: WOH G64 (For comparison) 1,540 [c] ± 77 [9] L/T eff: Located in the Large Magellanic Cloud. The largest known star with a well-defined radius. [9] [10] [14] [11] Theoretical limit ...