During his work on several historic missions, Casani rose through a series of technical and management positions, making an indelible mark on the nation’s space program. John R. Casani, a visionary engineer who served a central role in many of NASA’s historic deep space missions, died on Thursday, June 19, 2025, at the age […]...
Editor’s note: This interview was conducted in October 2023. As the International Space Station approaches 25 years of continuous human presence on Nov. 2, 2025, it is a meaningful moment to recognize those who have been there since the beginning—sharing the remarkable achievements of human spaceflight with the world. If you have ever witnessed the […]...
In addition to drilling rock core samples, the science team has been grinding its way into rocks to make sense of the scientific evidence hiding just below the surface. On June 3, NASA’s Perseverance Mars rover ground down a portion of a rock surface, blew away the resulting debris, and then went to work studying […]...
Could a liquid water ocean beneath the surface of Jupiter’s moon Europa have the ingredients to support life? Here’s how NASA’s mission to Europa would find out...
Researchers at NASA’s Jet Propulsion Laboratory are developing the Buoyant Rover for Under-Ice Exploration, a technology that could one day explore oceans under the ice layers of planetary bodies. The prototype was tested in arctic lakes near Barrow, Alaska...
Scientists think there is an ocean within Jupiter’s moon Europa. NASA-JPL astrobiologist Kevin Hand explains why scientists are so excited about the potential of this ice-covered world to answer one of humanity’s most profound questions...
Explore This SectionScienceEuropa ClipperAlien OceanEuropa Clipper HomeMissionOverviewFactsHistoryTimelineScienceGoalsTeamSpacecraftMeet Europa ClipperInstruments Assembly Vault PlateMessage in a BottleNewsNews & FeaturesBlogNewsroomReplay the LaunchMultimediaFeatured MultimediaResourcesAbout EuropaWhy Europa?Europa Up CloseIngredients for LifeEvidence for an Ocean To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoCould a liquid water ocean beneath the surface of […]...
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 data taken on a different orbit. The blue-white terrains indicate relatively pure water ice, whereas the reddish areas contain water ice mixed with hydrated salts, potentially magnesium sulfate or sulfuric acid. The […]...
The puzzling, fascinating surface of Jupiter’s icy moon Europa looms large in this newly-reprocessed color view, made from images taken by NASA’s Galileo spacecraft in the late 1990s. This is the color view of Europa from Galileo that shows the largest portion of the moon’s surface at the highest resolution. The view was previously released […]...
This reprojection of the official USGS Europa basemap is centered at the estimated source region for potential plumes that might have been detected using the Hubble Space Telescope. The view is centered at -65 degrees latitude, 183 degrees longitude. In addition to the plume source region, the image also shows the hemisphere of Europa that […]...