Local Group

Local Group of galaxies, including the massive members Messier 31 (Andromeda Galaxy) and Milky Way, as well as other nearby galaxies.
Distribution of the iron content (in logarithmic scale) in four dwarf neighbouring galaxies of the Milky Way

The Local Group is the galaxy group that includes the Milky Way. The Local Group comprises more than 54 galaxies, most of them dwarf galaxies. Its gravitational center is located somewhere between the Milky Way and the Andromeda Galaxy. The Local Group has a diameter of 10 Mly (3.1 Mpc) (about 1023 meters) and has a binary (dumbbell)[1]distribution. The group itself is a part of the larger Virgo Supercluster, which may be a part of the Laniakea Supercluster.

The three largest members of the group (in descending order) are the Andromeda Galaxy, the Milky Way[2] and the Triangulum Galaxy. The larger two of these spiral galaxies each have their own system of satellite galaxies.

History

The term "The Local Group" was introduced by Edwin Hubble in Chapter VI of his 1936 book The Realm of the Nebulae.[7] There, he described it as "a typical small group of nebulae which is isolated in the general field" and delineated, by decreasing luminosity, its members to be M31, Milky Way, M33, Large Magellanic Cloud, Small Magellanic Cloud, M32, NGC 205, NGC 6822, NGC 185, IC 1613 and NGC 147. He also identified IC 10 as a possible part of Local Group.

By 2003, the number of known Local Group members had increased from his initial 12 to 36.[8]

Other Languages
Afrikaans: Plaaslike Groep
asturianu: Grupu Local
български: Местна група
català: Grup Local
Cymraeg: Grŵp Lleol
Deutsch: Lokale Gruppe
español: Grupo Local
Esperanto: Loka Grupo
euskara: Talde Lokala
فارسی: گروه محلی
français: Groupe local
galego: Grupo Local
한국어: 국부은하군
hrvatski: Mjesna skupina
Bahasa Indonesia: Grup Lokal
italiano: Gruppo Locale
Lëtzebuergesch: Lokal Grupp
македонски: Месна Група
Bahasa Melayu: Kumpulan Tempatan
မြန်မာဘာသာ: Local Group
Nederlands: Lokale Groep
日本語: 局部銀河群
norsk nynorsk: Den lokale gruppa
ਪੰਜਾਬੀ: ਸਥਾਨਕ ਸਮੂਹ
پنجابی: مقامی گروہ
Piemontèis: Partìa local
português: Grupo Local
română: Grupul Local
Simple English: Local Group
slovenščina: Krajevna skupina
srpskohrvatski / српскохрватски: Lokalna grupa galaksija
தமிழ்: உட் குழு
Türkçe: Yerel Grup
українська: Місцева група
Tiếng Việt: Nhóm Địa phương
Winaray: Grupo Lokal
中文: 本星系群