Although Janus should be the least lonely of all moons -- sharing its orbit with Epimetheus -- it still spends most of its orbit far from other moons, alone in the vastness of space in this image from NASA's Cassini spacecraft.
From a distance Saturn seems to exude an aura of serenity and peace in this image from NASA's Cassini spacecraft. In spite of this appearance, Saturn is an active and dynamic world. Mimas is seen to the upper-right of Saturn.
Icy Curtain Eruptions on Enceladus Create an Illusion of Discrete Jets (Simulation)
This simulation, which begins and ends with a real image from NASA's Cassini spacecraft, demonstrates how the appearance of discrete jets could be an optical illusion that varies based on viewing geometry.
Not all of Saturn's rings are created equal: here the C and D rings appear side-by-side, but the C ring, which occupies the bottom half of this image, clearly outshines its neighbor. This image is from NASA's Cassini spacecraft.
Tendril-producing Geysers on Enceladus' South Polar Terrain
This graphic plots the source locations of geysers scientists have located on Enceladus' south polar terrain, with the 36 most active geyser sources marked and color coded by the behavior of the grains erupting from the geysers.
This collage of NASA's Cassini spacecraft images and computer simulations shows how long, sinuous features from Enceladus can be modeled by tracing the trajectories of tiny, icy grains ejected from the moon's south polar geysers.
Although we are used to seeing Saturn's moons lit directly by the Sun, sometimes we can catch them illuminated by 'Saturnshine.' Here, NASA's Cassini spacecraft see Mimas (upper right) lit by light reflected off of Saturn.
NASA's Cassini spacecraft stared toward Saturn's two-toned moon Iapetus for about a week in early 2015, in a campaign motivated in part to investigate subtle color differences within the moon's bright terrain.
NASA's Cassini captured these views of Saturn's icy moon Rhea on Feb. 9. The spacecraft returned to equatorial orbits around Saturn in March after nearly two years, allowing the mission to once again have close encounters with moons other than Titan.
From afar, Saturn's rings look like a solid, homogenous disk of material. But upon closer examination from NASA's Cassini spacecraft, we see that there are varied structures in the rings at almost every scale imaginable.
This illustration depicts potential origins of methane found in the plume of gas and ice particles that sprays from Saturn's moon, Enceladus, based on research by scientists working with the Ion and Neutral Mass Spectrometer on NASA's Cassini mission.
Enceladus: Possible Hydrothermal Activity (Artist's Concept)
This cutaway view of Saturn's moon Enceladus is an artist's rendering that depicts possible hydrothermal activity that may be taking place on and under the seafloor of the moon's subsurface ocean, based on published results from NASA's Cassini mission.
The moon Iapetus, like the 'force' in Star Wars, has both a light side and a dark side. Scientists think that Iapetus' dark/light asymmetry was actually created by material migrating away from the dark side.
Named after a Japanese paradise, NASA's Cassini spacecraft spies the Senkyo region of Titan), a bit less welcoming than its namesake with a very inhospitable average temperature of approximately 290 degrees below zero Fahrenheit (-180 degrees Celsius).
Presented here are side-by-side comparisons of a traditional Cassini Synthetic Aperture Radar (SAR) view, at left, and one made using a new technique for handling electronic noise that results in clearer views of Titan's surface, at right.
This montage from NASA's Cassini Synthetic Aperture Radar (SAR) images of the surface of Titan shows four examples of how a newly developed technique for handling noise results in clearer, easier to interpret views.
These views from NASA's Cassini Synthetic Aperture Radar (SAR) present a side-by-side comparisons of a traditional view and one made using a new technique called despeckling for handling electronic noise that results in clearer views of Titan's surface.
Many color images are taken by NASA's Cassini spacecraft in red light so scientists can study the often subtle color variations of Saturn's rings. These variations may reveal clues about the chemical composition and physical nature of the rings.