More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, ...

NASA’s Galileo spacecraft, which was designed to study the large, gaseous planet Jupiter and its moons, first caught hints of ...

The presence of an ocean leaves open the possibility that it could host life. Another nearby moon, Europa, is also considered ...

NASA Juno mission captured amazing new imagery of Jupiter's moon Europa. The spacecraft flew about 219 miles (352 kilometers) over the surface of the moon. Credit: Space.com | imagery credit: Credit : ...

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

NASA’s Europa Clipper is well on its way to Jupiter’s icy moon, Europa, set to arrive in 2030. While its science instruments ...

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

NASA's Europa Clipper spacecraft is on its way to Jupiter's icy moon Europa, using star trackers to navigate and ensure a smooth journey to its 2030 destination.

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

Scientists found Titan’s orbit is shifting faster than expected due to tidal dissipation. A recent cosmic event likely ...

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...