Great Dark Spot

Although their gravitational effects on nearby ring material look quite different, Prometheus and Pan -- pictured here -- are both shepherd moons, holding back nearby ring edges.

High northern terrain on Titan is made visible by some image processing sleight of hand. The view is the product of a ratio between Titan images taken using two different spectral filters. This pr...

The A and F rings are alive with moving structures in this Cassini spacecraft view. Graceful drapes of ring material created by Prometheus are seen sliding by at left, while clumpy ringlets slip th...

The Cassini spacecraft views the rugged surface of Mimas -- half lit by the Sun, and half lit by reflected light from Saturn. On the sunlit western limb lies the great Herschel impact crater. The ...

The Cassini spacecraft looks down on the north pole of Mimas and sees the moon's cratered trailing hemisphere. The moon's north pole lies on the terminator about a quarter of the way inward from t...

Although it is far too cold for blossoming flowers, summer does bring storm clouds and presumably rain to Titan's south polar region. The observed persistence of convective storm activity in the re...

This animated sequence of images, captured by NASA's Cassini spacecraft, shows changes in the brightness of the Enceladus plume during a 6.5-hour observation.

This image from NASA's Dawn spacecraft showing the northern part of Hanami Planum on Ceres honors the Japanese cherry blossom festival, or 'Hanami,' a long-standing Japanese tradition of welcoming ...

This image, taken by NASA's Dawn spacecraft on June 24, 2015, shows Dantu crater on dwarf planet Ceres from an altitude of 2,700 miles (4,400 kilometers); Dantu crater as small patches of bright ma...

Japan's Subaru Telescope captured this near-infrared image of Uranus and moons Miranda (top center) and Ariel (bottom left).

MESSENGER's Earth flyby on Aug. 2, 2005, not only adjusted the spacecraft's path to Mercury - the gravity assist maneuver allowed the spacecraft team to test several MESSENGER science instruments b...

In this image from NASA's Dawn spacecraft, bright material extends out from the crater Canuleia on asteroid Vesta. The bright material appears to have been thrown out of the crater during the impac...

Saturn's narrow F ring partly obscures the small moon Epimetheus. Interior to the F ring is the bright A ring. Epimetheus (113 kilometers, or 70 miles across at its widest point) is on the side of...

Sunlight streams through the high-altitude haze layer that extends completely around the giant moon, Titan, in this view of the moon taken by the Cassini spacecraft. Some fine structure can be spot...

The Cassini spacecraft eyes a prominent crater on the moon Janus. The south pole lies on the terminator at the bottom left of the image. This view is centered on terrain at 16 degrees south latit...

These mosaics (6 frames each) show the appearance of the Great Red Spot in infrared light (757 nanometers at upper left), violet light (415 nanometers at upper right), and infrared light within bot...

Seasonal changes in the atmosphere of Saturn's largest moon are captured in this natural color image, which shows Titan with a slightly darker top half and a slightly lighter bottom half. Titan's ...

This image from Cassini's radar instrument shows an impact crater with a diameter of 30 kilometers (19 miles) on the surface of Saturn's moon Titan. Cassini data have only revealed three definite ...

+ View Dione ''D-2'' Flyby Page This close-up view of Dione was taken on April 07, 2010 and received on Earth April 07, 2010. This image has not been validated or calibrated. A validated/calibra...

Prometheus is caught here casting a shadow on the F ring. To the right, the F ring also shows a gore where Prometheus recently entered into the ring, scattering material out of its way. The image...

As it glanced around the Saturn system one final time, NASA's Cassini spacecraft captured this view of the planet's giant moon Titan.

Saturn from Far and Near (Cassini-Huygens) May 26, 2004 Full-Res: PIA05983 The Cassini-Huygens spacecraft returned this bottom i...

This is the first raw image returned from the Cassini spacecraft after its closest flyby yet. Here the surface of Enceladus is about 320 kilometers (199 miles) away. The spacecraft completed its f...

Cassini takes in a sweeping view of Saturn's south polar region as the planet's shadow masks the rings and bright, icy Mimas looks on from left. This view looks toward the lit side of the rings fro...

"Saturn Calling" Musician Jeff Oster turns the extraterrestrial songs of the ringed planet into beautiful New Age Jazz. + Listen (MP3, 5.0 MB) Image credit: NASA/JPL/Space Science Institute/Jeff...