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

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

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.) ...

Since 2016, the NASA spacecraft Juno has been investigating Jupiter and its moons. Related: Gas giants: Jovian planets of our solar system and beyond Jupiter helped to revolutionize the way we saw ...

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 ...

During the red giant phase, both the Sun and Jupiter will shine brighter and become hotter. However, its moon Europa is ...

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

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.

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

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 ...

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.

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 ...