The Incas had a system of accounting that relied on the quipu. Cords of various colours were attached to a main cord with knots. The number and position of knots as well as the colour of each cord ...

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the ...

A quipu is an ancient recording device used by Andean civilizations, and particularly the Incas. It consists of a series of colored strings of various lengths, with knots tied in different positions.

In a major space breakthrough, astronomers have discovered a structure that may be the largest known in the universe: Quipu. Named after the Incan system of knotted cords used for recording ...