The Europa Clipper mission, NASA's largest planetary science spacecraft to date, aims to determine if Jupiter's moon Europa ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

NASA Juno mission captured amazing new imagery of Jupiter's moon Europa. The spacecraft flew about 219 miles (352 kilometers) ...

It was a history making launch -- when NASA’s Europa Clipper embarked on its long five-year voyage to Jupiter. The $5 billion ...

Jim Free, associate administrator at NASA, is set to retire on Feb. 22 after three decades of service.

More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...

NASA Associate Administrator Jim Free retires after 30+ years, leaving a legacy of leadership in space exploration.

Io, Europa, and Ganymede offer a fascinating glimpse into the Jupiter system. Continued exploration will unveil more secrets about these eni ...

NASA Associate Administrator Jim Free announced Wednesday his retirement, effective Saturday, Feb. 22. As associate ...

NASA’s PRIME-1 to study lunar ice for future Moon missions TRIDENT drill to extract lunar samples up to 1 meter deep MSOLO spectrometer to analyze trapped gases and water ice ...

Two moon landers on one rocket ... If NASA finds that Europa is a habitable place, a second Europa mission could return to determine if there are indeed any inhabitants. Launch of new astrophysics ...

The space agency was just $84 million short of completing the mission when it pulled the plug. VIPER had been slated to go to the moon on board an Astrobotic Griffin lander. Then, the space agency ...