RCS2 J2327 (also identified as RCS2 J2327-0204) is an extremely massive

galaxy cluster A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses. They are the second-lar ...

. It is located approximately 6.4 billion light-years away in the constellation of

Pisces Pisces may refer to: * Pisces, an obsolete (because of land vertebrates) taxonomic superclass including all fish * Pisces (astrology), an astrological sign * Pisces (constellation), a constellation **Pisces Overdensity, an overdensity of stars in ...

, thus making it one of the farthest clusters away from Earth. Recent studies have shown that the galaxy cluster has the mass of two quadrillion

sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radi ...

s, making it the second-most-massive galaxy cluster. The galaxies are known to be distorted by

gravitational lens A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer that is capable of bending the light from the source as the light travels toward the observer. This effect is known ...

ing, which can have the ability to deflect distort, and amplify the light from the objects behind it. It can also be observed in strong lens, weak lens, and microlens and has 85% invisible dark matter.

References

Galaxy clusters Pisces (constellation) {{galaxy-cluster-stub