Saturn’s spiral as seen from the north pole of the planet looking down on the equatorial plane, with the Sun to the right. The orbits of Saturn’s principal satellites are shown, along with the Earth-Moon system drawn to scale. The dotted area around the disk of Saturn indicates the well-known rings. The dash-dotted curve marks the magnetopause, which separates the magnetosphere from the solar wind. A dotted curve indicates one orbit of the Cassini spacecraft. The spiral pattern itself rotates in a counterclockwise sense with a period of 10.7 hours. Credit: J. Carbary and the Cassini/MIMI team