Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

“Jupiter guards its secrets with very formidable ... working at the Jet Propulsion Laboratory on another part of the Galileo mission, but he says he was very strongly influenced by the quandary ...

Learn more about NASA’s current mission to Europa here ... On this date: Galileo discovers three major moons of Jupiter ...

NASA's Juno spacecraft has resumed normal operations after entering safe mode twice during its 71st close approach to Jupiter ...

NASA's Galileo mission to Jupiter, focusing on the four moons that the Italian astronomer discovered 400 years ago, observed an atmosphere on Europa, ice at the poles and possibly an underground ...

The researchers emphasized how a sample return mission to Io could build off previous spacecraft missions to the Jovian (Jupiter) system, including Galileo, New Horizons (flyby en route to Pluto ...

In the 1990s, NASA's Galileo mission performed magnetic induction measurements that suggested there was such a layer, while more recently, the distribution of volcanoes on Io mapped by NASA's Juno ...