• NASA/JPL/Space Science Institute
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    Saturn eclipses the sun in this image taken by the Cassini spacecraft on Sept. 15, 2006.

  • The Planetary Data System
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    The moons Rhea and Dione appear as dots below and left of Saturn, respectively, in this photo taken by Voyager 2 on July 21, 1981.

  • NASA/JPL
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    Voyager 2 captured this image of Saturn on Aug. 11, 1981, from a range of 9.1 million miles away. Seen above the planet are the moons Dione (right) and Enceladus. This false-color print shows a green spot at the south edge of a yellow band; in true color, the spot would appear brown and the band white.

  • NASA/JPL-Caltech/SSI
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    Titan, Saturn's largest moon, measures 3,200 miles across and is larger than the planet Mercury. This image, taken from Cassini, combines six images taken on May 6, 2012.

  • NASA/SSPL/Getty Images
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    NASA's Cassini spacecraft captured 65 individual images of Saturn on Nov. 1, 2008. The result is this composite of Saturn's rings and southern hemisphere.

  • NASA/WireImage
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    As NASA's Cassini spacecraft approached Saturn, two narrow angle cameras captured this view of the planet, its delicate rings and several of its moons.

  • NASA/JPL/STScI
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    This image, taken Jan. 4, 1998, shows Saturn's reflected infrared light. The blue colors indicate a clear atmosphere down to a main cloud layer. The green and yellow colors indicate a haze above the main cloud layer. The red and orange colors indicate clouds reaching up high into the atmosphere.

    Two of Saturn's satellites are also seen — Dione on the lower left and Tethys on the upper right. They appear in different colors, yellow and green, indicating different conditions on their icy surfaces.

  • NASA/JPL/Space Science Institute
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    Cassini's wide-angle camera shot 75 photos in succession on Aug. 12, 2009, for this mosaic. The image shows Saturn, its rings and a few of its moons a day and a half after the planet's equinox, when the sun's disk was exactly overhead at the planet's equator.

  • NASA/JPL
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    Three images, taken by NASA's Voyager 2 through ultraviolet, violet and green filters on July 12, 1981, were combined to make this photograph of Saturn's northern hemisphere.

  • NASA/JPL/Space Science Institute
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    Next: 10 Spectacular Images of Glowing Nebulae

    This mosaic combines 30 images taken over the course of approximately two hours as Cassini panned its wide-angle camera across the entire planet and ring system on July 23, 2008.

    Six moons complete this constructed panorama: Titan (3,200 miles across), Janus (111 miles across), Mimas (246 miles across), Pandora (50 miles across), Epimetheus (70 miles across) and Enceladus (313 miles across).