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It can be thought of as a "clumpiness" factor - the higher the value for some distance scale, the more "clumpy" the universe is at that distance scale. From every pair in a distribution of galaxies, the two-point correlation function is calculated by counting the number of pairs that are separated by distances in various bins.
The Shapley Supercluster or Shapley Concentration (SCl 124) is the largest concentration of galaxies in our nearby universe that forms a gravitationally interacting unit, thereby pulling itself together instead of expanding with the universe. It appears as a striking overdensity in the distribution of galaxies in the constellation of Centaurus.
This analysis shows that the Universe is flat to within 1 / 2 percent, and that it is homogeneous and isotropic to one part in 100,000. Inflation predicts that the structures visible in the Universe today formed through the gravitational collapse of perturbations that were formed as quantum mechanical fluctuations in the inflationary epoch.
A video showing in 3D Laniakea and other nearby superclusters of galaxies The Laniakea Supercluster encompasses approximately 100,000 galaxies stretched out over 160 Mpc (520 million ly ). It has the approximate mass of 10 17 solar masses, or 100,000 times that of our galaxy, which is almost the same as that of the Horologium Supercluster . [ 3 ]
Contains about 56,000 galaxies, located 820 million light years away. BOSS Great Wall (BGW) (2016) 1,000,000,000: Structure consisting of 4 superclusters of galaxies. The mass and volume exceeds the amount of the Sloan Great Wall. [21] Perseus–Pegasus Filament (1985) 1,000,000,000: This galaxy filament contains the Perseus–Pisces Supercluster.
Linda Siobhan Sparke is a British astronomer known for her research on the structure and dynamics of galaxies. She is a professor emerita of astronomy at the University of Wisconsin–Madison , [ 1 ] and Explorers Program Scientist in the NASA Astrophysics Division.
Immediately after the Big Bang, the universe was filled with a very hot, nearly uniform plasma - a fireball - and there were no stars or galaxies," Northwestern University astrophysicist and study ...
Panoramic view of galaxies beyond the Milky Way, with the Norma cluster and the Great Attractor shown by a long blue arrow at the bottom-right in image near the disk of the Milky Way The dark flow was determined to be flowing in the direction of the Centaurus and Hydra constellations.