RTG fit and test

On October 15, 1997, the Cassini–Huygens spacecraft was launched on an almost 7-year journey to the Saturn system.

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

MESSENGER captured this departure sequence of Venus after a close flyby of the planet in 2007.

Rosaly Lopes shares how she was inspired to help the exploration of space and how that lead to her role as a planetary scientist.

NASA's Cassini spacecraft made its final approach to Saturn and dove into the planet’s atmosphere on Friday, Sept. 15, 2017 but the science provided by this enduring spacecraft will live on.

Episode 1: What is a dwarf planet?

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.

While NASA's Cassini spacecraft was pointed to study Saturn's F ring, it happened to catch a globular star cluster passing through the camera's field of view.

This three-frame animation from NASA's Cassini spacecraft shows the swirling clouds in a vortex spawned by a great northern storm on Saturn. The clouds are moving in a clockwise direction.

Scientists working with NASA's Dawn spacecraft have created a new video showing the giant asteroid Vesta as the spacecraft approaches this unexplored world in the main asteroid belt.

The sequence of seven images in this animation shows sunspots as viewed by NASA's Curiosity Mars rover from June 27 to July 8, 2015. From Mars, the rover was in position to see the opposite side of...

The heavens often seem vast and unchanging as seen from Earth, but movement in the skies is the norm. The relative motions of both Cassini and Enceladus over a 15-minute period create the movement ...

Jupiter Magnetosphere

A quick look at how a Bistatic Observation works.

Bands of eastward and westward winds on Jupiter appear as concentric rotating circles in a movie composed of Cassini images which have been reprojected to appear as if the viewer were floating over...

No one really knew what Vesta looked like until NASA’s Dawn spacecraft decided to drop in on it. Now, images taken by the spacecraft have been stitched together to create a virtual flyover of the j...

Rotating asteroids have a tough time sticking to their orbits. Their surfaces heat up during the day and cool down at night, giving off radiation that can act as a sort of mini-thruster.

This is the first footage of one orbiting robotic spacecraft taken by another orbiting robotic spacecraft at Earth's moon. 

Dwarf planet Ceres is shown in these false-color renderings, which highlight differences in surface materials.

A mission concept to explore Jupiter's intriguing moon system.

Giovanni Cassini, the astronomer, discovers a moon near Saturn. Half is dark as coal. The other half, bright as snow. Three centuries later, Cassini, the spacecraft, flies by for a close look.

This Cassini movie -- the first of its kind -- shows lightning on Saturn's night side flashing in a cloud that is illuminated by light from Saturn's rings.

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

These false-color mosaics from NASA's Cassini spacecraft chronicle the changing appearance of the huge storm that developed from a small spot in Saturn's northern hemisphere.

New science, mined from the archives. Data from NASA's Galileo orbiter launched a generation ago yields new evidence of plumes, eruptions of water vapor, from Jupiter's moon Europa.