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The Hercules–Corona Borealis Great Wall (HCB) [1] [5] or simply the Great Wall [6] is a galaxy filament that is the largest known structure in the observable universe, measuring approximately 10 billion light-years in length (the observable universe is about 93 billion light-years in diameter).
Hercules–Corona Borealis Great Wall (2014) [1] 9,700,000,000–10,000,000,000 [2] [3] [4] Discovered through gamma-ray burst mapping. Existence as a structure is disputed. [5] [6] [7] Giant GRB Ring (2015) [8] 5,600,000,000 [8] Discovered through gamma-ray burst mapping. Largest-known regular formation in the observable universe. [8] Huge-LQG ...
In cosmology, galaxy filaments are the largest known structures in the universe, consisting of walls of galactic superclusters.These massive, thread-like formations can commonly reach 50 to 80 megaparsecs (160 to 260 megalight-years)—with the largest found to date being the Hercules-Corona Borealis Great Wall at around 3 gigaparsecs (9.8 Gly) in length—and form the boundaries between voids ...
The Pisces–Cetus Supercluster Complex is estimated to be about 1.0 billion light-years (Gly) long and 150 million light years (Mly) wide. It is one of the largest structures known in the observable universe, but is exceeded by the Sloan Great Wall (1.3 Gly), Clowes–Campusano LQG (2.0 Gly), U1.11 LQG (2.5 Gly), Huge-LQG (4.0 Gly), and Hercules–Corona Borealis Great Wall (10 Gly ...
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The Hercules Supercluster thus forms part of the near edge of the Boötes Void. [8] Canis Major Void: Columba Void: Coma Void: Discovered in 1975, along with the Coma Supercluster, it lies in front of the Coma Cluster. [9] It was the first void to be discovered and is approximately 1/3 as far away as the much larger Boötes Void. [10] Corona ...
Hercules Superclusters: 15 h 23 m 05.3 s +08° 36′ 33″ 2065: Corona Borealis Cluster: Corona Borealis Supercluster: Corona Borealis: 15 h 22 m 42.6 s +27° 43′ 21″ 2 III 2067: Corona Borealis Supercluster: Corona Borealis: 15 h 23 m 14 s +30° 54′ 23″ 1 III 2079: Corona Borealis Supercluster: Corona Borealis: 15 h 28 m 04.7 s +28 ...
Varying between magnitudes 6.9 and 12.6 over a period of 357 days, [43] it is located near the junction of the border of Corona Borealis with Hercules and Bootes. [33] Located 1.5° northeast of Tau Coronae Borealis , W Coronae Borealis ranges between magnitudes 7.8 and 14.3 over a period of 238 days. [ 44 ]