Everything about Supercluster totally explained
» See Supercluster (genetic) for use of the word in genetics.
Superclusters are large groupings of smaller galaxy
groups and clusters, and are among the
largest structures of the
cosmos. The existence of superclusters indicates that the
galaxies in our
Universe are not uniformly distributed; most of them are drawn together in groups and clusters, with groups containing up to 50 galaxies and clusters up to several thousand. Those groups and clusters and additional isolated galaxies in turn form even larger structures called superclusters.
Once thought to be the largest structures in nature, superclusters are now understood to be subordinate to enormous walls or sheets, sometimes called "super cluster complexes", that can span a billion
light-years in length, more than 5% of the
observable universe. Super clusters themselves can span several hundred million light-years. The typical speed of a galaxy is about 1000
km/
s.
Hubble's law implies that typical galaxies would only move about 30 million light-years at that speed in a Hubble time of 1/H, which is approximately the age of the universe. While this is a huge distance in human terms, it's much smaller than the size of super clusters. In an expanding universe, saying that the distance
d an object has moved equals its present velocity
v times the elapsed time
t underestimates
d when
t isn't small compared to 1/H. The calculation above still gives some idea of how long it would take the normal movements of galaxies to form or obliterate these structures, and thus indicates their great age. When we observe super clusters and larger structures today, we learn about the condition of the universe when these super clusters were created. The directions of the rotational axes of galaxies within super clusters also gives us insight into the formation process of galaxies early in the history of the Universe.
No clusters of super clusters (“hyperclusters”) are known, and the existence of structures larger than superclusters is debated (see
Galaxy filament). Interspersed among super clusters are large voids of space in which few galaxies exist. Even though superclusters are the largest structures confirmed, the total number of superclusters leaves possibilities for structural distribution; the total number of super clusters in the universe is believed to be close to 10 million.
Super clusters are frequently subdivided into groups of clusters called
galaxy clouds.
Nearby superclusters
Distant Superclusters
Pisces-Cetus Supercluster
Bootes Supercluster
Horologium Supercluster
Corona Borealis Supercluster
Columba Supercluster
Aquarius Supercluster
Aquarius B Supercluster
Aquarius-Capricornus Supercluster
Aquarius-Cetus Supercluster
Bootes A Supercluster
Caelum Supercluster
Draco Supercluster
Draco-Ursa Majoris Supercluster
Fornax-Eridanus Supercluster
Grus Supercluster
Leo A Supercluster
Leo-Sextans Supercluster
Leo-Virgo Supercluster
Microscopium Supercluster
Pegasus-Pisces Supercluster
Pisces Supercluster
Pisces-Aries Supercluster
Ursa Majoris Supercluster
Virgo Coma SuperclusterFurther Information
Get more info on 'Supercluster'.
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