This is a list of the largest cosmic structures so far discovered. The unit of measurement used is the light-year (distance traveled by light in one Julian year; approximately 9.46 trillion kilometres).
This list includes superclusters, galaxy filaments and large quasar groups (LQGs). The list characterizes each structure based on its longest dimension.
The Cosmic Web (2018)⏩
👉The Largest Structure Ever Found In Our observable universe Till Date.
I don't know the Exact Dimension of it.
However it's lie nearly 11 billion light years. Still, Astronomers measuring its dimension length and width would be up to date.
Hercules–Corona Borealis Great Wall (2014)⏩
👉10,000,000,000
Discovered through gamma-ray burst mapping, and is the first structure to exceed 10 billion light-years.
Giant GRB Ring (2015)⏩
👉5,600,000,000 Discovered through gamma-ray burst mapping. Largest-known regular formation in the observable Universe.
Huge-LQG (2012-2013)⏩
👉4,000,000,000 Decoupling of 73 quasars. Largest-known large quasar group and the first structure found to exceed 3 billion light-years.
U1.11 LQG (2011)⏩
👉2,500,000,000 Involves 38 quasars. Adjacent to the Clowes-Campusano LQG.
Clowes–Campusano LQG (1991)⏩
👉2,000,000,000 Grouping of 34 quasars. Discovered by Roger Clowes and Luis Campusano.
Sloan Great Wall (2003)⏩
👉1,380,000,000 Discovered through the 2dF Galaxy Redshift Survey and the Sloan Digital Sky Survey.
(Theoretical limit)⏩
👉1,200,000,000 Structures larger than this size are incompatible with the cosmological principle according to all estimates
BOSS Great Wall (BGW) (2016)⏩
👉1,000,000,000 Structure consisting of 4 superclusters of galaxies. The mass and volume exceeds the amount of Sloan Great Wall.
Pisces-Cetus Supercluster Complex (1987)⏩
👉1,000,000,000 Contains the Milky Way, and is the first galaxy filament to be discovered. (The first LQG was found earlier in 1982.) A new report in 2014 confirms the Milky Way as a member of Laniakea Supercluster.
Caelum Supercluster ⏩
👉910,000,000
Caelum Supercluster is a collection of over 550,000 galaxies. It is the largest of all galaxy supercluster.
Ophiuchus Supercluster ⏩
👉858,000,000
Draco Supercluster ⏩
👉808,000,000
CfA2 Great Wall (1989)⏩
👉750,000,000Also known as the Coma Wall
Saraswati Supercluster⏩
👉 652,000,000
Saraswati Supercluster consists of 43 massive galaxy clusters, which include Abell 2361 and ZWCl 2341.1+0000.
Boötis Supercluster ⏩
👉620,000,000
Horologium Supercluster
(2005)⏩
👉550,000,000Also known as Horologium-Reticulum Supercluster.
Laniakea Supercluster (2014)⏩
👉520,000,000 Galaxy supercluster in which the Earth is located
Komberg–Kravtsov–Lukash LQG11⏩
👉500,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Komberg–Kravtsov–Lukash LQG 12⏩
👉480,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Newman LQG (U1.54)⏩
👉450,000,000
Komberg–Kravtsov–Lukash LQG⏩
👉 5430,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Tesch–Engels LQG⏩
👉420,000,000
The Great Attractor⏩
👉400,000,000
Shapley Supercluster⏩
👉400,000,000 First identified by Harlow Shapley as a cloud of galaxies in 1930, it was not identified as a structure until 1989.
Komberg–Kravstov–Lukash LQG 3⏩
👉390,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
U1.⏩
👉90380,000,000
Lynx–Ursa Major Filament (LUM Filament)⏩
👉370,000,000
Sculptor Wall ⏩
👉370,000,000 Also known as Southern Great Wall.
Pisces-Cetus Supercluster⏩
👉350,000,000
Komberg–Kravtsov–Lukash LQG 2⏩
👉350,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
z=2.38 filament around protocluster ClG⏩
👉J2143-4423330,000,000
Webster LQG⏩
👉320,000,000 First LQG (Large Quasar Group)
Discovered.
Komberg–Kravtsov–Lukash LQG⏩
👉8310,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Komberg–Kravtsov–Lukash LQG⏩
👉1280,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Komberg–Kravtsov–Lukash LQG⏩
👉6260,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Komberg–Kravtsov–Lukash LQG⏩
👉7250,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
King LQG⏩
👉235,000,000 Discovered by George King
SCL ⏩
👉1338+27228,314,341 One of most distant known superclusters.
Komberg–Kravtsov–Lukash LQG⏩
👉9200,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
Newfound Blob⏩
👉200,000,000 Giant collection of Lyman-alpha blobs
Ursa Major Supercluster⏩
👉200,000,000
Komberg-Kravtsov-Lukash LQG⏩
👉 10180,000,000 Discovered by Boris V. Komberg, Andrey V. Kravstov and Vladimir N. Lukash
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