31 relations: Andromeda (constellation), Andromeda Galaxy, Astrophysics (journal), Atlas of Peculiar Galaxies, Brady Haran, Constellation, Dwarf elliptical galaxy, Elliptical galaxy, Galactic tide, Galaxy formation and evolution, Guillaume Le Gentil, Kilometre, Light-year, List of Andromeda's satellite galaxies, List of galaxies, Local group, Messier object, New General Catalogue, Parsec, Principal Galaxies Catalogue, Satellite galaxy, Second, Spiral galaxy, Star formation, Supermassive black hole, Surface brightness fluctuation, The Astronomical Journal, The Astrophysical Journal, Tip of the red-giant branch, Uppsala General Catalogue, 10 zettametres.
Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth.
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Astrophysics is a peer-reviewed scientific journal of astrophysics published by Springer.
The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp.
Brady John Haran (born 18 June 1976) is an Australian independent film-maker and video journalist who is known for his educational videos and documentary films produced for BBC News and for his YouTube channels, such as Numberphile and Periodic Videos.
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In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).
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Dwarf elliptical galaxies, or dEs, are elliptical galaxies that are much smaller than others.
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile.
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A galactic tide is tidal force experienced by objects subject to the gravitational field of a galaxy such as the Milky Way.
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The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies.
Guillaume Joseph Hyacinthe Jean-Baptiste Le Gentil de la Galaisière (Coutances, 12 September 1725 – Paris, 22 October 1792) was a French astronomer.
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The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; or) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the United Kingdom where the statute mile is the official unit used.
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A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.
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The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way.
The following is a list of notable galaxies.
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Local group may refer to.
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The Messier objects are a set of over 100 astronomical objects first listed by French astronomer Charles Messier in 1771.
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The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a well-known catalogue of deep-sky objects in astronomy compiled by John Louis Emil Dreyer in 1888, as a new version of John Herschel's Catalogue of Nebulae and Clusters of Stars.
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A parsec (symbol: pc) is a unit of length used to measure the astronomically large distances to objects outside the Solar System.
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The Catalogue of Principal Galaxies (PGC) is an astronomical catalog published in 1989 that lists B1950 and J2000 equatorial coordinates and cross-identifications for 73,197 galaxies.
A satellite galaxy is a galaxy that orbits a larger galaxy due to gravitational attraction.
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The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units (SI).
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A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, forms part of the Hubble sequence.
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Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse to form stars.
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A supermassive black hole (SMBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses, and is found in the center of almost all massive galaxies.
Surface brightness fluctuation (SBF) is a secondary distance indicator used to estimate distances to galaxies.
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
Tip of the red-giant branch (TRGB) is a primary distance indicator used in astronomy.
The Uppsala General Catalogue of Galaxies (UGC) is a catalogue of 12921 galaxies visible from the northern hemisphere.
To help compare different orders of magnitude, this page lists distances starting at 10 Zm (1022 m or 1.1 million light years).
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2MASX J00424182+4051546, APG 168, Ark 12, Arp 168, Dwarf Elliptical Galaxy M32, Dwarf elliptical galaxy M32, Elliptical Galaxy M32, IRAS 00399+4035, K79 1B, LEDA 2555, MCG+07-02-015, Messier Object 32, NGC 221, NGC221, PGC 2555, RX J0042.6+4052, UGC 452, Z 0039.9+4036, Z 535-16.