Large quasar group

A large quasar group (LQG) is a collection of quasars (a form of supermassive black hole active galactic nuclei) that form what are thought to constitute the largest astronomical structures in the observable universe.

LQGs are thought to be precursors to the sheets, walls and filaments of galaxies found in the relatively nearby universe.

[2] According to researcher and author, Roger Clowes, the existence of structures with the size of LQGs was believed theoretically impossible.

[3][4] Redshift, denoted as "z," is a fundamental concept in astrophysics used to measure the spectral line shift in light emitted by celestial objects like quasars due to their motion away from Earth.

In the table below, higher redshift values directly correspond to greater cosmic distances.