Vibrating Aerosol Molecules on Titan (close up)

This graphic shows Cassini's final plunge toward Saturn from a top view. 

For an Earth observer on May 3, 2005, the Cassini spacecraft appeared to pass behind the rings, then Saturn, then the rings again (the red line). The discovered harmonic structure was found on both...

The European Space Agency has set up a special gallery for the more than 350 raw images snapped by the Huygens probe as it descended to Titan on Jan. 14, 2005. Visit the gallery at: http://esamulti...

This still is from a short computer-animated film that highlights Cassini's accomplishments and Saturn and reveals the science-packed final orbits between April and September 2017.

In this computer-generated artist's concept, the Cassini spacecraft is shown breaking apart after entering Saturn's atmosphere.

As depicted in this illustration, Cassini will plunge into Saturn’s atmosphere on Sept. 15, 2017.

Artist's concept for the first generation Ranger spacecraft.

Diagram of the Cassini spacecraft and Huygens probe.  

Enceladus is a small ocean world covered in ice -- one of more than 60 confirmed moons orbiting Saturn.

This synthetic aperture radar image was obtained by the Cassini spacecraft on its recent pass by Titan's south pole on Dec. 20, 2007. This portion of the (T39) swath is of the region extending f...

This schematic graphic illustrates the bombardments that lead to colorful splotches and bands on the surfaces of several icy moons of Saturn. The arrow indicating the orbital motion of the moon is ...

Artist's concept of Cassini orbiter diving between Saturn's inntermost rings and cloud tops.

Take a virtual trip to alien worlds, and maybe even plaster your living room with new, futuristic space tourism posters.

Dawn's launch vehicle is a variant of the Delta II known as a Delta 2925H.

NASA's Dawn mission by the numbers:

Presented here is a complete set of cartographic map sheets from a high-resolution atlas of Saturn's moon Mimas. The atlas is a product of the imaging team working with NASA's Cassini spacecraft. ...

To celebrate the first anniversary of Cassini's arrival at Saturn, you were invited to vote on a selection of the most popular images so far. The most popular image was announced in mid-July, 2005....

This graphic shows Cassini's final descent toward Saturn beginning with a distant encounter with Titan. 

One of the glittering trails caused by small objects punching through Saturn's F ring is highlighted in this movie from NASA's Cassini spacecraft. These trails show how the F ring, the outermost of...

+ Unannotated version Almost all of the hydrocarbon seas and lakes on the surface of Saturn's moon Titan cluster around the north pole, as can be seen in this mosaic from NASA's Cassini mission....

This animation shows an example of a recent space weather event forecast derived from such observations by Goddard Space Flight Center space weather lab and illustrates the kind of information we w...

This free NASA e-Book celebrates Saturn as seen through the eyes of the Cassini spacecraft. 

This graphic shows the closest approaches, or periapses, of Cassini's final two orbital phases.The Ring-Grazing orbits are shown in gray; Grand Finale orbits are shown in blue. The orange line show...

Saturday, April 16 is National Astronomy Day. Astronomy clubs around the country hold special astronomy programs on this day and night. Events usually include solar viewing during the day and solar...

This diagram created by Cassini's mission planning team shows how navigators use Titan flybys to shape Cassini's orbits.