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The Great Wall of China, at 6,352 km or 3,947 mi long, is a megastructure.This picture was taken near Beijing in February 2005. A megastructure is a very large artificial object, although the limits of precisely how large vary considerably.
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 ...
Pages in category "Megastructures" The following 38 pages are in this category, out of 38 total. ... Artificial world; Astronomical engineering; Atlantropa; B.
Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.
Rak Mesba is a partial ancient alien Alderson Disk in Orion's Arm, a multi-authored online science fiction world-building project. [6] A disk-shaped planet similar to an Alderson disk (though far smaller) served as the homeworld of the fantasy "Aysle" setting (or "cosm") of West End Games' Torg roleplaying game. In contrast with the Alderson ...
The Great Wall (also called Coma Wall), sometimes specifically referred to as the CfA2 Great Wall, is an immense galaxy filament.It is one of the largest known superstructures in the observable universe.
Common water masses in the world ocean are: Antarctic Bottom Water (AABW): Antarctic Bottom Water is a very important water mass. Antarctic Bottom Water is the left over part when sea ice is being made. It is very cold but, not quite freezing so the water moves down and along the ocean floor. North Atlantic Deep Water (NADW) Circumpolar Deep ...
Pages in category "Lists of largest buildings and structures" The following 46 pages are in this category, out of 46 total. ... List of longest bridges above water in ...