Huge-LQG

U1.27 (also Huge Large Quasar Group, in short: Huge- LQG ) is a cosmic super structure of 73 quasars in the constellation Leo. The name is derived from their mean redshift of z = 1.27; U is the abbreviation of Unit.

Huge- LQG was found in November 2012 in the catalog DR7QSO the Sloan Digital Sky Survey.

Size

Huge- LQG has a maximum dimension of about 4 billion light years (1200 Mpc ) and a mean diameter of 1.5 billion light-years (500 Mpc ). Order of magnitude, it spans more than a thousand times the distance from the Milky Way to the Andromeda galaxy.

The structure is about 3 trillion solar masses extremely high mass and corresponds to the 18- million-fold the Milky Way.

Huge- LQG is about three times larger than the Sloan Great Wall. Until the discovery of the Hercules Corona Borealis Great Wall, it was considered the largest and most massive known structure in the universe.

Scale problem

It is not entirely clear to what extent the structure is actually gravitationally connected. It is possible that non-contiguous areas merely by chance have the same redshift. Whether such a super structure would be still compatible with the cosmological principle is controversial.