RTG fit and test

The Sun emitted a significant solar flare on Dec. 19, 2014.  

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.

SDO collected images of the rarest predictable solar event—the transit of Venus across the face of the Sun in 2012.

This artist's concept shows the European Space Agency's Huygens probe descent sequence.

Since the 1960’s, scientists have suspected that frozen water could survive in cold, dark craters at the Moon’s poles. 

Orange and white stripes slide against each other, and huge oval storms  gyrate in the NASA's Cassini spacecraft's first color movie clip of Jupiter.  

Soar over the giant asteroid Vesta in 3-D. Put on your 3-D glasses for this ride over asteroid Vesta.

The Cassini spacecraft arrived at Saturn in June 2004 and is now halfway through its mission. A new photo essay showcases some stunning images returned by the mission.

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.

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

Actual images of the July 4, 2005 impact of the Deep Impact probe into comet Tempel 1.

This movie shows a quick succession of multiple products of Titan's surface from the Cassini orbiter and the European Space Agency's Huygens probe.

This is a compilation of the Saturn hexagon movies released on Dec. 5, 2013.

This frame from a video from NASA's Dawn mission shows dwarf planet Ceres in false-color renderings, which highlight differences in surface materials.

This animation, made using data from NASA's Dawn spacecraft, shows the topography of Occator crater on Ceres.

Eleven years in the life of the Sun, spanning most of solar cycle 23.

The bright crescent of Saturn's moon Enceladus slides past distant Rhea in this mutual event, or occultation, movie from Cassini.

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 ...

Spacecraft at JPL

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...

  After decades of exploration, Voyager 1 reaches a historic milestone for mankind, interstellar space.

A recreation of Huygen's historic descent to Saturn's giant moon Titan in January 2005.

A curated just-for-kids NASA video playlist. 

This animation shows "beacons" of hot air seen in the infrared that appeared during a great springtime storm on Saturn from January 2011 to March 2012. 

Recent findings have led scientists to believe Saturn's moon Titan may have a volcano.