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A map of the Boötes Void. The Boötes Void (/ b oʊ ˈ oʊ t iː z / boh-OH-teez) (colloquially referred to as the Great Nothing) [1] is an approximately spherical region of space found in the vicinity of the constellation Boötes, containing only 60 galaxies instead of the 2,000 that should be expected from an area this large, hence its name.
Voids are particularly galaxy-poor regions of space between filaments, making up the large-scale structure of the universe. Some voids are known as supervoids . In the tables, z is the cosmological redshift , c the speed of light , and h the dimensionless Hubble parameter , which has a value of approximately 0.7 (the Hubble constant H 0 = h × ...
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 structures are listed based on their longest dimension.
The simultaneous existence of the largest-known voids and galaxy clusters requires about 70% dark energy in the universe today, consistent with the latest data from the cosmic microwave background. [5] Voids act as bubbles in the universe that are sensitive to background cosmological changes.
Current events; Random article; ... List of largest voids; List of largest cosmic structures; ... In this map of the Observable Universe, objects appear enlarged to ...
In astronomy, voids are the empty spaces between filaments (some of the largest-scale structures in the Universe) that contain hardly any, or no, galaxies. Pages in category "Voids (astronomy)" The following 13 pages are in this category, out of 13 total.
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It is the second-largest-confirmed void to date, with an estimated diameter of 300 to 400 Mpc (1 to 1.3 billion light-years) [1] and its centre is approximately 1.5 billion light-years away (z = 0.116). [1] It was discovered in 1988, [2] and was the largest void in the Northern Galactic Hemisphere, [1] and