Flight across Titan

In this image from NASA's Mars Reconnaissance Orbiter, ripples in the sand indicate which way the wind is moving.

Comet 67P/Churyumov-Gerasimenko by Rosetta's OSIRIS narrow-angle camera on 3 August 2014, from a distance of 285 km (177 miles).

Amateur astronomer Anthony Wesley obtained this image of a storm on Saturn from his backyard telescope in Murrumbateman, Australia, on March 22, 2010. He sent it to scientists working with NASA's C...

Dione [dy-OH-nee] is the second densest moon of Saturn, after Titan. Dione is probably composed of a rocky core making up one-third of the moon's mass, and the rest is composed of water-ice. Dione ...

The Cassini spacecraft looks toward Saturn's tiny moon Aegaeon within the G-ring arc. The moonlet Aegaeon (formerly known as S/2008 S 1) can't be seen in this image, but it orbits in the bright ar...

This strikingly crisp view shows Atlas heading into Saturn's shadow at upper left. The moon's basic, elongated shape is easy to detect here. (See Watching Atlas's Waistline for a different perspec...

A small new found object, temporarily designated S/2004 S 3, has been seen orbiting Saturn's outer F ring. 

This map of Titan's surface brightness was assembled from images taken by the Cassini spacecraft over the past year, both as it approached the Saturn system and during three closer flybys in July, ...

Canyons and mountain peaks snake along the terminator on the crater-covered, icy moon Dione. With the Sun at a low angle on their local horizon, the line of mountain ridges above center casts shado...

Saturn's second largest moon Rhea pops in and out of view behind the planet's rings in this image from the Cassini spacecraft, which includes the smaller moon Epimetheus.

NASA's Cassini spacecraft captured this parting view showing the rough and icy crescent of Saturn's moon Dione following the spacecraft's last close flyby of the moon on Aug. 17, 2015.

On the top right of this Cassini spacecraft image, Saturn's moon Dione may appear closer to the spacecraft because it is larger than the moon Enceladus in the lower left. However, Enceladus was act...

Craters large and small cover the rugged surface of Saturn's moon Janus. This view looks toward the southern hemisphere of Janus (179 kilometers, or 111 miles across at its widest point). The moon...

This image of Fabia AV-L-13, from the atlas of the giant asteroid Vesta, was created from images taken as NASA's Dawn mission flew around the object, also known as a protoplanet.

Ejected material appears bright around some of Dione's craters in the image taken during the Cassini spacecraft's flyby of the moon on March 28, 2012. This view is centered on terrain at 25 degree...

A startling silhouette of Saturn is created in this Cassini spacecraft portrait. Although the sun is eclipsed by Saturn in this dramatic image, some sunlight scatters through the uppermost part of...

This diagram depicts conditions observed by NASA's Cassini spacecraft during a flyby in Dec. 2013, when Saturn's magnetosphere was highly compressed, exposing Titan to the full force of the solar w...

This image, taken on June 18, 2015 by NASA's Dawn spacecraft, shows dwarf planet Ceres from an altitude of 2,700 miles (4,400 kilometers) -- a mountain 3 miles (5 kilometers) high, surrounded by re...

The Cassini spacecraft examines the icy, crater-saturated face of Rhea. This view looks toward the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up. The image was tak...

Saturn Storms Observed by Voyager August 5, 2004 Full-Res: PIA01364 Voyager 1 and 2 observed radio signals from lightning which w...

This image shows Titan, Saturn's largest moon (5,150 kilometers, or 3,200 miles, across), with a streak-like cloud near its south pole. The cloud may be part of a region of polar clouds seen duri...

Cassini images have revealed the presence of previously unseen faint rings in some of the gaps in Saturn's rings -- possible indicators of small yet-unseen moons. Image A is a contrast-stretched v...

This image shows a region near asteroid Bennu’s north pole on the terminator line between the asteroid’s day and night sides. The OSIRIS-REx spacecraft’s MapCam camera obtained the image on Feb. 20...

+ See Unannotated Version This series of images from NASA's Cassini spacecraft shows the development of the largest storm seen on the planet since 1990. These true-color and composite near-true-co...

+ View Original Image   High-resolution Cassini images show an astonishing level of structure in Saturn's Cassini Division, including two ringlets that were not seen in NASA Voyager spacecraft im...