For the void with a similar nickname, see Boötes Void.
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Artist's conception of the Giant Void and the filaments and walls that surround it. The internal clusters can also be appreciated (credit: Pablo Carlos Budassi).
The Giant Void (also known as the Giant Void in NGH, Canes Venatici Supervoid, and AR-Lp 36) is an extremely large region of space with an underdensity of galaxies and located in the constellation Canes Venatici. 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 possibly the second-largest ever detected. Even the hypothesized "Eridanus Supervoid" corresponding to the location of the WMAP cold spot is dwarfed by this void, although the Giant Void does not correspond to any significant cooling to the cosmic microwave background.
Inside this vast void there are 17 galaxy clusters, concentrated in a spherically shaped region 50 Mpc in diameter.[1] Studies of the motion of these clusters show that they have no interaction to each other, meaning the density of the clusters is very low resulting in weak gravitational interaction.[1] The void's location in the sky is close to the Boötes Void.
In a series of papers published between 2004 and 2006, cosmologist and theoretical physicist Laura Mersini-Houghton presented a theory that the universe arose from a multiverse, and made a series of testable predictions which included the existence of the Giant Void.[3][4]
^ abcdeKopylov, A. I.; Kopylova, F. G. (February 2002). "Search for streaming motion of galaxy clusters around the Giant Void" (PDF). Astronomy & Astrophysics. 382 (2): 389–396. Bibcode:2002A&A...382..389K. doi:10.1051/0004-6361:20011500. Archived (PDF) from the original on 2018-07-18.
^"The Northern Cone of Metagalaxy" (Kopylov et al. 1988)
^Moon, Timur (19 May 2013). "Planck Space Data Yields Evidence of Universes Beyond Our Own". International Business Times. Retrieved 27 July 2014.
^Cauchi, Stephen (9 December 2007). "Into the void: a glimpse of our tiny place in the scheme of things". The Age. Retrieved 27 July 2014.
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(February 2002). "Search for streaming motion of galaxy clusters around the GiantVoid" (PDF). Astronomy & Astrophysics. 382 (2): 389–396. Bibcode:2002A&A.....
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