Quipu (supercluster)

Quipu is a large-scale superstructure of galaxies of the Universe, a wall of galaxies or galaxy hypercluster composed of knots of galaxy clusters. As of 2025, it is the largest known structure in the Universe, some 1.3×10⁹ light-years (7.6×10²¹ mi; 1.2×10²² km) long; and the most massive known structure, containing 2×10¹⁷ solar masses (4.0×10⁴⁷ kg; 8.8×10⁴⁷ lb; 4.0×10⁴⁴ t).^[1][2]

The structure was discovered by Hans Böhringer and colleagues using data from the ROSAT X-ray satellite, and described in a 2025 paper on arXiv. It was named "quipu" as it is reminiscent of the Andean knotted textile called quipu that Böhringer had seen in a museum near Santiago, Chile, while he was working at the European Southern Observatory.^[3][4]