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This image of Ceres is part of a sequence taken by NASA's Dawn spacecraft April 24 to 26, 2015, from a distance of 8,500 miles (13,500 kilometers).

The Cassini spacecraft looks across the unlit ringplane as Mimas glides silently in front of Dione. It is often difficult to tell from two-dimensional views like this where the moons are in relati...

The Cassini spacecraft surveys the ancient, craggy surface of Tethys, sighting the crater Telemachus with its prominent central peak. The view is toward the north pole of Tethys (1,071 kilometers,...

+ View Full Res This raw, unprocessed image of Saturn's moon Enceladus was taken on Oct. 19, 2011. As the spacecraft passed Enceladus, its infrared instruments, cameras and other instruments moni...

This image, taken on June 25, 2015 by NASA's Dawn spacecraft, shows a portion of the southern hemisphere of dwarf planet Ceres. The large crater with a central peak at bottom is Zadeni crater.

In September, the New Horizons team released a stunning but incomplete image of Pluto's crescent.

This perspective view of Cornelia crater on the giant asteroid Vesta shows an example of 'pitted terrain,' an unexpected discovery in data returned by NASA's Dawn mission.

A close-up view of an astronaut's bootprint in the lunar soil, photographed with a 70mm lunar surface camera during the Apollo 11 extravehicular activity (EVA) on the moon.

The Cassini spacecraft looks up from beneath the ringplane to spy Atlas hugging the outer edge of the A ring, above center. The image was taken in visible light with the Cassini spacecraft narrow-...

This image, made from data obtained by NASA's Dawn spacecraft, shows the mineral distribution in the southern hemisphere of the giant asteroid Vesta.

Saturn appears as a serene globe amid tranquil rings in this view from NASA's Cassini spacecraft. In reality, the planet's atmosphere is an ever-changing scene of high-speed winds and evolving weat...

The northern and southern hemispheres of Tethys are seen in these polar stereographic maps, mosaicked from the best-available Cassini images. Each map is centered on one of the poles, and surface ...

Ring World Highlights

The European Space Agency's Huygens probe appears shining as it coasts away from Cassini in this image taken on Dec. 26, 2004, just two days after the probe successfully detached from the Cassini s...

Slumping features and landslides can be clearly seen near the base of the largest scarp in this image from NASA's Dawn spacecraft. Some of the hummocky terrain near the scarps is probably due to la...

Saturn's shadow cuts across the rings in this view from high above the ringplane. While in the shadow the ring particles cool off and then heat up again when they enter the sunlight. The image was...

This set of images shows the areas mapped so far on Saturn's moon Titan by the Cassini radar mapper using its synthetic aperture radar imaging mode. Labels represent the approximate central longitu...

The Huygens probe is installed into the Cassini orbiter in the Payload Hazardous Servicing Facility at the Kennedy Space Center in July 1997.

Occator Crater and Ahuna Mons appear together in this view obtained by NASA's Dawn spacecraft on February 11, 2017.

With its excess warmth, water ice jets and huge vapor plume laced with simple organic materials, Enceladus is an important part of the quest to understand environments compatible with the chemistry...

Viking 2 Orbiter image of the Martian satellite Deimos taken from 1400 km.

This image, taken by NASA's Dawn spacecraft, shows the surface of dwarf planet Ceres from an altitude of 915 miles (1,470 kilometers). The image, with a resolution of 450 feet (140 meters) per pixe...

This is the first image of Saturn¿s ultraviolet aurora taken by the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope in October 1997, when Saturn was at a distance of 1.3 ...

Diversity on Titan October 28, 2004 Full-Res: PIA06988 This radar image of the surface of Saturn's moon Titan was acquired on October 26,...

Kerwan Crater, at 174 miles (280 kilometers) in diameter is the largest crater that NASA's Dawn has discovered on Ceres. A portion of its jagged rim runs from the top left to bottom center of this ...