Title:[0492] Below Saturn's rings Caption:A Voyager 1 view of the underside of Saturn's rings, taken on 12 November 1980. From this angle, the illumination is very different from the normal view. The B ring appears dark instead of bright and the normally dark Cassini Division is the brightest feature in the system. Copyright: Credit:A NASA/JPL PHOTO

Title:[0496] Rings and shadows Caption:A Voyager 2 image of Saturn taken on 11 August 1981 showing the shadow of the rings cast on the planet. Copyright: Credit:A NASA/JPL PHOTO

Title:[0500] Rings and shadows Caption:A false-color Voyager 2 image showing Saturn's rings across the lower left corner, and their shadow on the planet immediately above them. The planet shows through the Cassini Division in the rings as a brownish stripe, but sunlight passing through the division makes it appear white in the shadow. Copyright: Credit:A NASA/JPL PHOTO

Title:[0479] Saturn and rings from 900,000 miles Caption: Voyager 1 took this image from 1.5 million km (930,000 miles), looking back after it had passed by Saturn. The shadow of the rings can be seen against the overexposed crescent of the planet. Copyright: Credit:A NASA/JPL PHOTO

Title:[0802] False-color image of Saturn's C ring Caption:False-color image constructed from ultraviolet, blue and green images taken by Voyager 2 on 23 August 1981 from 2.7 million km (1.7 million miles). The C ring shows as blue whereas a small part of the B ring in the frame is yellow, indicative of a different composition. More than 60 bright and dark ringlets can be seen in total. Copyright: Credit:National Optical Astronomy Observatories

Title:[0801] Enhanced color image of Saturn's rings Caption:Subtle color variations between the rings of Saturn, reflecting differences in chemical composition, are highlighted in this enhanced color image assembled from Voyager 2 images taken on 17 August 1981. Copyright: Credit:National Optical Astronomy Observatories

Title:[0804] Saturn's rings showing "spoke" features in the B ring Caption:Spoke-like features in Saturn's B ring; a Voyager image taken from 2.5 million miles. They are thought to be due to the interaction between dust particles in the ring and the planet's magnetic field. Copyright: Credit:National Optical Astronomy Observatories

Title:[0423] Saturnian rings Caption:Voyager 2 looks back at Saturn and its rings on 29 August 1981 from a distance of 3.4 million km (2.1 million miles) after passing the planet. Copyright: Credit:A NASA/JPL PHOTO

Title:[0504] Saturn's A ring and Prometheus Caption:A false-color image of Saturn's A ring taken on 23 August 1981 by Voyager 2. The dark gap is the Encke division. Prometheus, the inner "shepherd" satellite of the F ring is also visible in the frame. Copyright: Credit:A NASA/JPL PHOTO

Title:[0493] Saturn's "braided" "F" ring Caption:Saturn's F ring from Voyager 1 at a distance of 750,000 km (470,000 miles), showing its complex structure. The ring is "contained" by two "shepherding" moons: Prometheus, which orbits inside the ring; and Pandora, which orbits outside it. Copyright: Credit:A NASA/JPL PHOTO

Title:[0514] Synthesized image of the structure of Saturn's F ring Caption:A synthesized image of the structure of Saturn's F ring derived from data obtained with Voyager 2's photopolarimeter during an occultation of the star Delta Scorpii. Copyright: Credit:A NASA/JPL PHOTO

Title:[0491] Under the rings (range 400,000 miles) Caption:A view of Saturn's rings from Voyager 1 at a distance of 717,000 km (444,000 miles) on 12 November 1980, showing the reversal of brightness of the major features when seen from the unilluminated side. The C ring and material in the Cassini Division show brightly as almost white, while the B ring appears a dark brownish color. Copyright: Credit:A NASA/JPL PHOTO

Title:[0805] Wide-angled view of Saturn's rings Caption:This highly foreshortened view of Saturn's ring system was obtained by Voyager 2 on 26 August 1981, a few seconds before the spacecraft crossed the ring plane. Copyright: Credit:National Optical Astronomy Observatories

Title:[0515] Synthesized image of structure in the Encke division in Saturn's rings Caption:A computer-generated image of the structure in part of Saturn's ring system derived from data acquired by Voyager 2's photopolarimeter during the occultation of the star Delta Scorpii on 25 August 1981. The region shown is near the inner edge of the Encke Division in the outer part of the A ring. Copyright: Credit:A NASA/JPL PHOTO