Letters from the July 7, 2007, issue of Science News

Hex sine?

The NASA researchers baffled by the hexagonal shape in Saturn’s soupy atmosphere at its northern pole (“A hexagon on the ringed planet,” SN: 4/28/07, p. 269) should read “As waters part, polygons appear” (SN: 6/3/06, p. 348). It is worth investigating whether there is a similar phenomenon—I still suspect some sort of standing sine wave effect—at work in both cases.