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

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

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

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

This week, NASA released the first image from the Europa Clipper spacecraft's voyage. The image is a mosaic of a star field, created from three shots the solar-powered orbiter captured in December of ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

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

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 observatory: Feb. 27 NASA intends ...

NASA is losing four key senior officials close to its flagship moon program, according to people familiar with the changes, ...

The lander, Blue Ghost, fired its engines for four minutes Thursday to propel the spacecraft into lunar orbit ahead of a ...

The agency announced on Monday afternoon (Feb. 10) that it has picked SpaceX to launch Pandora, a 716-pound (325-kilogram) ...

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