Here’s how it works. Jupiter, the largest planet in our solar system, boasts a whopping 95 moons, making it the second-most populous planet in terms of its companions (Saturn has the most moons.) ...

It’s time for JUICE to get to work. The European Space Agency’s JUpiter ICy moons Explorer blasted off on an Ariane 5 rocket yesterday to begin its eight-year journey to the Jovian system to ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The discovery was ...

Astronomers have calculated that the gas giant Jupiter used to be twice as big as it is now, based on the odd orbits of two of its many moons.

A European spacecraft rocketed away Friday on a decadelong quest to explore Jupiter and three of its icy moons that could hold buried oceans. The journey began with a perfect morning liftoff by ...

Jupiter, the largest planet orbiting the sun, is fascinating unto itself, but its massive moons are the ultimate prize. Some of them are hunks of icy rock that may hide life-harboring oceans ...

There's a new moon king in our solar system: 12 new moons were discovered around Jupiter, which makes it the planet with the most moons. Jupiter is already the biggest planet in our solar system.

As the largest planet in the solar system, Jupiter has more than 60 moons orbiting it, and the European Space Agency’s (ESA) JUICE spacecraft will study three of its largest in detail.

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Jupiter's second-largest moon has more impact craters on its surface than any other planetary body in the solar system, and it has tons of ice on its surface as well. For decades. researchers ...