Pioneer 10 at Jupiter (Artist's Concept)

+ Non-annotated version This false-color view of Saturn's moon Mimas from NASA's Cassini spacecraft accentuates terrain-dependent color differences and shows dark streaks running down the sides ...

Version B of the asteroids installment of our solar system poster series.

Some key numbers for Cassini's Grand Finale and final plunge into Saturn. 

+ 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....

Radio signals sent by NASA's Cassini spacecraft to Earth through Saturn's rings revealed the presence of highly unusual regular formations of densely grouped ring particles. The harmonic ring struc...

Clara, Sugar Plum Fairy, move aside. Saturn's moons give Tchaikovsky's classic ballet, "The Nutcracker," a graceful new spin in this video compiled from some 61 images taken by the Cassini spacecra...

These polar maps show the first global, topographic mapping of Saturn's moon Titan, using data from NASA's Cassini mission. To create these maps, scientists employed a mathematical process called s...

Geysers on Saturn's little moon Enceladus are throwing off Saturn's internal clock, making it hard to measure the length of the Saturn day. Credit: NASA/JPL

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.

During the July 14, 2005, flyby of Saturn's moon Enceladus, Cassini's ultraviolet imaging spectrograph made the first direct detection of an atmosphere, first suggested by Cassini magnetometer meas...

Artist's concept of Cassini orbiter crossing Saturn's ring plane.

On Nov. 9, 2006, Cassini's composite infrared spectrometer captured its first view of the infrared heat radiation emanating from the "tiger stripe" fractures at the south pole of Saturn's moon Ence...

During its final targeted flyby of Titan on April 22, 2017, Cassini's radar mapper got the mission’s last close look at the moon's surface.

This mosaic of images from NASA’s Cassini spacecraft depicts fan-like structures in Saturn's tenuous F ring. Bright features are also visible near the core of the ring. Such features suggest the ex...

Tycho Crater is one of the most prominent craters on the Moon.

Saturn reaches opposition -- the closest it comes to Earth -- on Jan. 27, 2006. On this date, golden Saturn rises in the east just as the sun sets in the west. It will be visible all night long. A...

Until recently, Saturn's tiny moon Enceladus was thought to be cold and dead. But close observations by the Cassini spacecraft have revealed dramatic features and made this frozen world a new targe...

Join us as we approach the second anniversary of the Huygens Probe descent, and help us decide which of the Cassini spacecraft's many spectacular views from the last year and a half stands out the ...

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.

This illustration shows the interior of Saturn, including its core of heavy elements (orange), liquid metallic hydrogen layer (grey), and gaseous molecular hydrogen envelope (brown). 

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...

See also the non-annotated version. Astronomers have long known that Saturn's rings reflect sunlight most strongly when Earth is located directly between Saturn and the sun. Flat, shiny surfaces (...

The image is the first topographic map of part of Titan's north polar region. The false-color mosaic on the left was produced from overlapping stereo images from the Cassini radar instrument and...

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.

Cassini mission planners created this animation to showcase Cassini's final 22 orbits - the mission's Grand Finale.