Boötes Void - Wikipedia
The Boötes Void (/ boʊˈoʊtiːz / 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 …
Void (astronomy) - Wikipedia
Instead of the general notion that a void is a region of space with a low cosmic mean density; a hole in the distribution of galaxies, it defines voids to be regions in which matter is escaping; which corresponds to the dark energy equation of state, w.
Next Stop: Voids | NASA Blueshift
2013年7月30日 · Our next contender is the Boötes (boh-OH-teez) Void (or the Great Void, for the more dramatic), discovered in 1981 and located in the vicinity of the constellation of the same name. At 250 to 330 million light years across, the Boötes Void is one of the largest voids out there that we’ve discovered.
List of voids - Wikipedia
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 × ...
The Boötes void: Why the Universe has a mysterious hole 330 …
Boötes is one of the largest, earning it the title of ‘supervoid’. It’s thought that Boötes is the product of smaller voids merging together. The cause of these voids is thought to lie in the …
A Giant Hole In The Universe: Just What Is The Boötes Void?
2022年8月1日 · At 250 to 330 million light-years across, it is one of the largest voids that we know of. To put that in context, that's about 2 percent of the diameter of the entire observable universe. The...
You can see something in a void. Explore a 'holy grail' of astronomy
2024年6月28日 · As seen on the two-dimensional dome of the sky, the void is a circle roughly 25° across and centered at R.A. 14h50m, Dec. 46°0′, very close to the 6th-magnitude star 38 Boötis.
Boötes Void, the mysterious hole in our Universe
Voids and superclusters were first identified in the mid 1970s when redshift surveys were used to map the universe in 3D. The 2dF Galaxy Redshift Survey. Credit: Matthew Colless. The Boötes Void was discovered in 1981 by the American astronomer …
Earth Might Be Sitting in a Massive 'Supervoid' in Space
2023年12月5日 · A growing body of evidence suggests that the Milky Way galaxy is drifting on the edge of one of these voids in its little corner of the Universe, a bubble of space known rather obviously as the Local Void.
[2007.12064] Redshift-space effects in voids and their impact on ...
2020年7月23日 · Using a spherical void finder, we developed a statistical and theoretical framework to describe physically the connection between the identification in real and redshift space. We found that redshift-space voids above the shot noise level have a unique real-space counterpart spanning the same region of space, they are systematically bigger and ...