Great Wall
The Great Walls are the largest known structures in the universe. They are based on data set mapping of gamma-ray bursts (GRBs). The mapping found an unusually high concentration of similarly distanced GRBs in certain areas.[1][2]
Structures larger than 1,200,000,000 light years are incompatible with the cosmological principle according to all estimates.
| Structure name (year discovered) |
Maximum dimension (in light years) |
Notes |
|---|---|---|
| Hercules-Corona Borealis Great Wall (2014)[3] | 10,000,000,000[1][2][4] | Discovered through gamma-ray burst mapping, and is the first structure to exceed 10 billion light years. |
| Giant GRB Ring (2015)[5] | 5,600,000,000[5] | Discovered through gamma-ray burst mapping. Largest known regular formation in the observable Universe.[5] |
| Huge-LQG (2012-2013) | 4,000,000,000[6][7][8] | 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) | 1,370,000,000 | Discovered through the 2dF Galaxy Redshift Survey and the Sloan Digital Sky Survey. |
| 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. |
| CfA2 Great Wall (1989) | 750,000,000 | Also known as the Coma Wall |
| Laniakea Supercluster (2014) | 520,000,000 | Galaxy supercluster in which the Earth is located |
| Horologium Supercluster (2005) | 550,000,000 | Also known as Horologium-Reticulum Supercluster. |
Great Wall Media
- 華夷圖附注.jpg
Huayi tu, an 1136 map of China with the Great Wall depicted on the northern edge of the country
- GreatWallChina4.png
The extent of the Ming Empire and its walls
- Greatwall large.jpg
Photograph of The Great Wall of China from 1907.
- Hanmuren.JPG
Great Wall of Han dynasty near Yumenguan
Jiayuguan, the westmost point of Ming Great Wall
- 20090529 Great Wall 8185.jpg
Ming dynasty Great Wall at Jinshanling
- A long stretch of the Great Wall.jpg
A more rural portion of the Great Wall that stretches through the mountains, here seen in slight disrepair
References
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- ↑ 2.0 2.1 Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ 5.0 5.1 5.2 Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).
- ↑ Lua error in Module:Citation/CS1/Utilities at line 38: bad argument #1 to 'ipairs' (table expected, got nil).