For centuries, Jupiter reigned as king of the moons. Initially, the Big Four, discovered by Galileo, and then as optics and ...

Saturn has taken an impressive lead in the "who has the most moons" race with Jupiter after the discovery of a further 128 ...

Io’s long-debated magma ocean may not exist. Juno spacecraft data reveals that tidal forces deform the moon differently than ...

Europa, one of Jupiter’s intriguing moons, is hiding an ocean beneath its icy shell — an ocean that might harbor alien life.

The first major event of Europa Clipper's journey to Jupiter takes place this weekend as a gravity assist maneuver around the Red Planet.

NASA’s Europa Clipper is using Mars and Earth’s gravity to travel efficiently to Jupiter. The spacecraft will study Europa’s ...

NASA's Europa Clipper is about to use Mars' gravitational pull to slingshot itself towards Jupiter's smallest moon later this ...

Objects under the influence of a gravitational field will move toward the field's center of gravity. Sometimes, as with the Sun and Jupiter, their mutual center of gravity or barycenter lies ...

After that, it's a straightforward trek to the outer solar system; the probe is set to arrive at Jupiter's orbit in April 2030. "We come in very fast, and the gravity from Mars acts on the ...

NASA's Europa Clipper will fly past Mars today to adjust its trajectory and position itself for a critical phase of its ...