Tholin Formation in Titan's Upper Atmosphere

This artist’s concept shows an over-the-shoulder view of Cassini making one of its Grand Finale dives over Saturn.

This view shows the southwestern rim of 106-mile-wide (170-kilometer-wide) Urvara crater on Ceres.In the crater's center is a prominent double peak. NASA's Dawn spacecraft obtained the image on Oct...

                  Two Waves in One Spectacular Image of Saturn's Rings July 1, 2004   Full-Res: PIA06093   This image...

The Cassini spacecraft surveys Saturn's outstretched ring system in the infrared from a vantage point high above the planet's northern latitudes. Nearly the full expanse of the main rings is visibl...

Artist's concept of Earth's reflection in Dawn spacecraft.

This image taken by the Long-Range Reconnaissance Imager (LORRI) is the most detailed of Arrokoth (2014 MU69) returned so far by the New Horizons spacecraft. 

Ithaca Chasma rips across the cratered surface of Tethys, creating a scar more than 1,000 kilometers (600 miles) long, from north to south. Cassini got a closer look at this ancient rift during a ...

Active Atmosphere August 13, 2004 Full-Res: PIA05434 Saturn's atmosphere displays elegant structural detail in this image of the sout...

Saturn has 31 known satellites. They vary greatly in size, shape and appearance.

NASA's Cassini spacecraft has spotted a glowing patch of ultraviolet light near Saturn's north pole that marks the presence of an electrical circuit that connects Saturn with its moon Enceladus. Th...

This image from NASA's Dawn spacecraft shows dark colored mountains (top of the image) in the northern region of asteroid Vesta. The origin of such mountains is currently being investigated.

This image, taken by NASA's Dawn spacecraft, shows dwarf planet Ceres from an altitude of 2,700 miles (4,400 kilometers). The image, with a resolution of 1,400 feet (410 meters) per pixel, was take...

The Cassini spacecraft's views from edge-on with the rings are perfect for capturing multiple Saturnian moons grouped closely. Here Tethys (1,071 kilometers, or 665 miles across), with its enormou...

Saturn's shadow interrupts the planet's rings, leaving just thin slivers of the rings visible in this image, which shows a pair of the planet's small moons. This view looks toward the northern, su...

Mimas plows along in its orbit, its pockmarked surface in crisp relief. The bright, steep walls of the enormous crater, Herschel (130 kilometers, or 80 miles wide), gleam in the sunlight. The lit ...

This image from NASA's Dawn spacecraft shows Fabia crater, located in asteroid Vesta's Numisia quadrangle, in Vesta's northern hemisphere.

The northern and southern hemispheres of Dione are seen in these polar stereographic maps, mosaicked from the best-available clear-filter images from NASA's Cassini and Voyager missions. Each map ...

                  Titan's surface revealed July 3, 2004   Full-Res: PIA06407   Piercing the ubiquitous layer of smog ...

The shepherd moon Pan orbits Saturn in the Encke gap while the A ring surrounding the gap displays wave features created by interactions between the ring particles and Saturnian moons. Pan (17 mil...

This half-lit view of Enceladus bears a passing resemblance to similar views of Earth's own natural satellite, but the similarities end there. Earth's rocky moon is covered in dark, volcanic basins...

This poster is a stereographic (fish-eye) projection taken with the descent imager/spectral radiometer onboard the European Space Agency's Huygens probe, when the probe was about 5 kilometers (3 mi...

Saturn's icy moon Enceladus hovers above Saturn's exquisite rings in this color view from Cassini. The rings, made of nearly pure water ice, have also become somewhat contaminated by meteoritic dus...

The Cassini spacecraft pictures a crescent of Saturn's moon Rhea. Although craters dominate this particular view, the trailing hemisphere of Rhea also features wispy fractures. See Rhea in Natural...

This image of the giant asteroid Vesta obtained by NASA's Dawn spacecraft shows numerous impact craters illustrate the asteroid's violent youth. You need 3-D glasses to view this image.

This is an artist concept of a close-up view of Saturn's ring particles. The planet Saturn is seen in the background (yellow and brown). The particles (blue) are composed mostly of ice, but are not...