Saturn's hexagon change in season. These changes were observed by the Cassini spacecraft. One hypothesis, developed at Oxford University, is that the hexagon forms where there is a steep latitudinal gradient in the speed of the atmospheric winds in Saturn's atmosphere. Similar regular shapes were created in the laboratory when a circular tank of liquid was rotated at different speeds at its centre and periphery. The most common shape was six sided, but shapes with three to eight sides were also produced. The shapes form in an area of turbulent flow between the two different rotating fluid bodies with dissimilar speeds. A
Campaign Hexagon System Campaign Hexagon System Campaign Hexagon System is a supplement for fantasy role-playing games published by Judges Guild in 1977. "Campaign Hexagon System" is a GM's aid: a book of blank hexagon sheets overprinted with larger gray hexes so the GM can integrate wilderness maps of varying scales. It includes tables for generating wilderness terrain. "Campaign Hexagon System" is a booklet of which the main portion is devoted to over 60 blank campaign hex grids. A rectangular hexagonal tessellation of about 1000 small hexes appears on each page, and on this grid is superimposed a large hex representing 5 miles across