The Perseus–Pegasus Filament is a

galaxy filament In cosmology, galaxy filaments (subtypes: supercluster complexes, galaxy walls, and galaxy sheets) Boris V. Komberg, Andrey V. Kravtsov, Vladimir N. Lukash; "The search and investigation of the Large Groups of Quasars" ; ;R.G. Clowes; "Large Qu ...

containing the

Perseus–Pisces Supercluster The Perseus–Pisces Supercluster (SCl 40) is one of the largest known structures in the universe. Even at a distance of 250 million light-years, this chain of galaxy clusters extends more than 40° across the northern winter sky. The Perseus-Pis ...

and stretching for roughly a billion

light-year A light-year, alternatively spelled light year, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (), or 5.88 trillion miles ().One trillion here is taken to be 101 ...

s (or over 300/h Mpc). Currently, it is considered to be one of the largest known structures in the universe.The reference cited claims the Perseus-Pisces Filament as the largest known structure in the universe. However, various reports cite the

Hercules–Corona Borealis Great Wall The Hercules–Corona Borealis Great Wall or simply the Great Wall is the largest known structure in the observable universe, measuring approximately 10 billion light-years in length (the observable universe is about 93 billion light-years in di ...

as the largest at across. This filament is adjacent to the

Pisces–Cetus Supercluster Complex The Pisces–Cetus Supercluster Complex is a galaxy filament. It includes the Laniakea Supercluster which contains the Virgo Supercluster lobe which in turn contains the Local Group, the galaxy cluster that includes the Milky Way. This filament ...

Discovery

The Perseus–Pegasus Filament was discovered by David Batuski and Jack Burns of

New Mexico State University New Mexico State University (NMSU or NM State) is a public land-grant research university based primarily in Las Cruces, New Mexico. Founded in 1888, it is the oldest public institution of higher education in New Mexico and one of the stat ...

in 1985. It is likely that Clyde W. Tombaugh, of the Lowell Observatory, discovered its existence in 1936 while conducting his search for trans-Saturnian planets. He reported it as the Great Perseus-Andromeda stratum of Extra-Galactic Nebulae. Earlier still, parts of this clustering had been reported by .Nature, volume 130, issue 3273, pp. 132 (1932)

Notes

References

Galaxy filaments Large-scale structure of the cosmos Astronomical objects discovered in 1985 {{physical-cosmology-stub

Discovery

See also

Notes

References