Written by Scott VanBommel, Planetary Scientist at Washington University in St. Louis Curiosity was back at work on Monday, ...

Part of NASA's Mars Science Laboratory mission, Curiosity, was the largest and most capable rover ever sent to Mars when it launched in 2011. Curiosity set out to answer the question: Did Mars ever ...

These 15 frames show the great variety of surface features on Jupiter's icy moon, Europa, which have been revealed by the Galileo spacecraft Solid State Imaging (CCD) system during its first six ...

Galileo orbiter near-infrared observations of Europa overlayed on a Voyager map. Original Caption-March 26, 1998. The NIMS instrument on the Galileo spacecraft, which is being used to map the mineral ...

This image shows features on Jupiter's moon Europa that may be "flows" from ice volcanoes. It was taken by the Galileo spacecraft solid state imaging (CCD) ...

This six frame mosaic of Europa's surface shows a variety of interesting geologic features. The prominent "X" near the center of the mosaic is the junction of ...

Europa, a moon of Jupiter, appears as a thick crescent in this enhanced-color image from NASA's Galileo spacecraft. The view combines images taken in violet, green and near-infrared filters in 1998 ...

This colorized image of Europa is a product of clear-filter grayscale data from one orbit of NASA's Galileo spacecraft, combined with lower-resolution color ...

Scientists are all but certain that Europa has an ocean underneath its icy surface, but they do not know how thick this ice might be. This artist's concept illustrates two possible cut-away views ...

This graphic shows the location of water vapor detected over Europa's south pole that provides the first strong evidence of water plumes erupting off Europa's surface, in observations taken by NASA's ...

The optical head for Europa Clipper’s stellar reference unit, or star tracker, in a clean room at NASA’s Jet Propulsion Laboratory. The optical head is a camera that uses special image processing to ...

One of Europa Clipper’s star tracker optical heads in a JPL clean room for testing in October 2021. After the spacecraft’s launch in October 2024, the star tracker will autonomously identify stars to ...