Io in Eclipse

With fingers crossed and eyes wide open, sci-fi fans and scientists savor the joys of discovery...at Iapetus.

An update on findings from Cassini's latest flyby of Saturn's largest moon, Titan.

This computer-generated view shows the view from the perspective of the Cassini spacecraft as it dives between the rings and Saturn's cloud tops.

In this month's sky, look for lovely crescent Moons at the start and end of the month. The September equinox brings the beginning of fall in the Northern Hemisphere. And Mars is at solar conjunctio...

Sungrazing comets are a special class of comets that come very close to the sun at their nearest approach, a point called perihelion.

Striking 3-D detail highlights a towering mountain, the brightest spots and other features on dwarf planet Ceres in a new video from NASA's Dawn mission.

This graphic shows in a series of three images how Saturn's rings, after they became tilted relative to Saturn's equatorial plane, would have transformed into a corrugated ring.

On Jan. 22, 2012, the Sun erupted with a solar flare, a coronal mass ejection, and a burst of highly energetic protons known as solar energetic particles.

On March 6, the Dawn spacecraft will slip into orbit around Ceres, a dwarf planet located in the main asteroid belt.

This short animation created by Cassini's mission planning team shows the spacecraft's final orbits - starting with the Ring-Grazing orbits in November 2016 and transitioning to the Grand Finale or...

We know what the Red Planet looks like from the outside – but what's going on under the surface of Mars?

The little moon Daphnis and its entourage of waves on the edge of the Keeler gap in Saturn's rings cast long shadows in this movie created from images taken as the planet approaches its mid-August ...

For hundreds of years, this gaseous giant planet appeared shrouded in colorful bands of clouds extending from dusk to dawn, referred to as zones and belts.

Io Color Eclipse

This movie created from images obtained by NASA’s Cassini spacecraft shows a propeller-shaped structure created by a hidden, embedded moon moving through one of Saturn's rings.

NASA's Cassini spacecraft stared at Saturn for nearly 44 hours on April 25­ to 27, 2016, to obtain this movie showing just over four Saturn days.

What might a wet Mars have looked like? This artist's concept attempts to fill in the blanks.

This short movie shows the view of Kuiper Belt object 2014 MU69 (nicknamed Ultima Thule) as seen by NASA's New Horizons spacecraft from Dec. 7, 2018 to Jan. 1, 2019. During the approach, Ultima Thu...

This simulated voyage over the surface of Neptune's large moon Triton was produced using topographic maps derived from images acquired by NASA's Voyager spacecraft during its August 1989 flyby, 20 ...

Sir Arthur C. Clarke's video greeting to NASA's Jet Propulsion Laboratory for Cassini's first close Iapetus flyby in 2007.

This spectrogram and video show a changing pattern of radio waves from Saturn known as Saturn Kilometric Radiation, as detected by NASA's Cassini spacecraft.

This mosaic strip – extending across the hemisphere that faced the New Horizons spacecraft as it flew past Pluto on July 14, 2015 – now includes all of the highest-resolution images taken by the NA...

This audio clip was created from radio signals received by the radio and plasma wave science instrument on the Cassini spacecraft.

This video describes Cassini measurements of high speed streams of tiny dust particles emanating from the vicinity of Saturn.

This animation shows a color-coded map from NASA's Dawn mission revealing the highs and lows of topography on the surface of dwarf planet Ceres.