The Cassini spacecraft looks toward Rhea's cratered, icy landscape with the dark line of Saturn's ringplane and the planet's murky atmosphere as a background. Rhea is Saturn's second-largest moon, at 1,528 kilometers (949 miles) across.
This global digital map of Rhea was created using data taken during NASA's Cassini and Voyager spacecraft flybys. This map contains data from Cassini's Jan. 11, 2011, flyby of Rhea. Six Voyager images fill gaps in Cassini's coverage of the north pole.
NASA's Cassini spacecraft looks past the cratered south polar area of Saturn's moon Rhea to spy the moon Dione and the planet's rings in the distance. Dione's 'wispy' terrain can be seen on the trailing hemisphere of that moon.
A pair of Saturn's many moons joins the planet in this scene captured by NASA's Cassini spacecraft. Tethys appears as a small white dot above the rings on the far left, Enceladus appears as a smaller bright speck beside the planet.
Rhea and Dione seem like dark and light fraternal twins in this image from NASA's Cassini spacecraft, with each of these two Saturnian moons displaying a large crater oriented similarly in the northern hemisphere.
On its fourth and final targeted flyby of Rhea, NASA's Cassini spacecraft provided this stunning view of the ancient and heavily cratered surface. Billions of years of impacts have sculpted Rhea's surface into the form we see today.
The northern and southern hemispheres of Rhea are seen in these polar stereographic maps, mosaicked from the best-available NASA Cassini and Voyager images. Six Voyager images fill in gaps in Cassini's coverage of the moon's north pole.
A pair of small moons join Saturn's second largest moon in this NASA Cassini spacecraft image spotlighting Rhea in front of the rings. Janus is seen beyond the rings on the right and Prometheus is visible between the main rings and thin F ring on left.
Saturn's rings and small moon Prometheus obscure NASA's Cassini spacecraft's view of the planet's second largest moon, Rhea. Prometheus can be seen just below the center of the image, in front of Rhea.
NASA's Cassini orbiter has revealed many surprises within the Saturn system, including the possible presence of a ring of debris surrounding the ancient heavily cratered surface of Rhea, Saturn's second largest moon.
NASA's Cassini orbiter has revealed the possible presence of a ring of debris surrounding the ancient heavily cratered surface of Rhea, Saturn's second largest moon. The bluish material in this image is believed to be fresh ice.
These three enhanced-color views of an equatorial region on Saturn's moon Rhea were made from data obtained by NASA's Cassini spacecraft. The colors have been enhanced to show colorful splotches and bands on the icy moon's surface.