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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).
The Sloan Great Wall is between 1.8–2.7 times longer than the CfA2 Great Wall of galaxies (discovered by Margaret Geller and John Huchra of Harvard University in 1989). [2] It also contains several galactic superclusters, the largest and richest of which is named SCl 126. This is located in the highest density region of the structure.
Discovered through gamma-ray burst mapping. Largest-known regular formation in the observable universe. [8] Huge-LQG (2012–2013) 4,000,000,000 [9] [10] [11] Decoupling of 73 quasars. Largest-known large quasar group and the first structure found to exceed 3 billion light-years. "The Giant Arc" (2021) 3,300,000,000 [12] Located 9.2 billion ...
The BOSS Great Wall is one of the largest superstructures in the observable universe, [2] though there are even larger structures known. This figure shows the superclusters of the BOSS Great Wall, on Cartesian coordinates. The large complex has a mean redshift of z ~ 0.47 (z times Hubble length ≈ 6.8 billion light years). [1]
As such, its information regarding construction, year, and notes is from the list of tallest lighthouses at The Lighthouse Directory. [1] Sources are given for all other information. Heights are from the United States Coast Guard Light List for the United States [2] and from NGA List of Lights for the rest of the world, [3] unless a better ...
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The seat of Raleigh’s Catholic diocese ranks as the fifth-largest cathedral in the United States, bigger than St. Patrick’s in Manhattan. An aerial view of the Holy Name of Jesus Cathedral in ...
Part of the southern section of the Chester city walls showing the base of a former drum tower and the River Dee The Roman walls of Lugo are a UNESCO World Heritage Site The Walls of Ston are a series of defensive stone walls, originally more than 7 kilometres (4.3 mi) long, that surrounded and protected the city of Ston, in Dalmatia, part of the Republic of Ragusa, in what is now southern ...