Vol. 588
In section 1. Letters

Discovery of a massive supercluster system at z~0.47

This letter to the Editor reports the discovery in the SDSS BOSS data of a supercluster named the BOSS Great Wall, which consists of two large walls of 830 galaxies at redshift 0.45 < z 0.5. This new system is more extended than any other known structure, and its closest comparison in terms of morphology is the Sloan Great Wall.

Caption: Galaxies in the BOSS Great Wall (BGW) superclusters in Cartesian coordinates. Different colors show the individual superclusters in the BGW system.