Ganymede, Callisto, Io, and Europa—their unique features, and their potential to reveal extraterrestrial life.

Ganymede, the biggest moon in the solar system ... It's also the only one of Jupiter's four large Galilean moons (the others being Europa, Callisto and Io) whose surface is dominated by furrows ...

The moon, one of Jupiter’s four largest, is covered in a thick icy crust and is believed to be concealing a global saltwater ocean. That ocean may be up to 100 miles deep and large enough to ...

Jupiter’s four largest moons – the main focus of Juice’s mission – are named after protagonists in the ‘love affairs’ of Zeus, the equivalent of Jupiter in Greek mythology.

A colossal asteroid slammed into Jupiter's largest moon Ganymede with so much power it dramatically and permanently reoriented the moon roughly 4 billion years ago, new research suggests.

Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a Kobe University researcher realized that the Solar System's biggest moon's axis has shifted as a result of the impact ...

Billions of years ago, a massive asteroid struck Ganymede, the largest moon orbiting Jupiter, shifting it on its axis, new ...

A colossal asteroid impact on the Jupiter moon Ganymede not only reshaped its physical landscape but may have also altered ...

New simulations show that Jupiter's massive moon Ganymede was ... 90-mile-wide asteroid around 4 billion years ago. The colossal collision was likely one of the biggest asteroid impacts the ...