Ringed planet with icy moons

Ringed planet with icy moons

. Saturnís yellow-brown clouds are swept into bands by the planetís rapid rotation. Two of its white moons (left), Tethys (above) and Dione, are covered with water ice. The shadows of Saturnís main rings and Tethys are cast onto the cloud tops. The outer A ring is separated from the central B ring by the Cassini Division. This gap is so tenuous that the edge of Saturn can be seen through it. The faintest of Saturnís main rings, the C-ring or crepe ring, is barely visible against the planet. This image was obtained from the Voyager 1 spacecraft on 3 November 1980. (Courtesy on NASA and JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University