Four billion years ago, Ganymede literally got knocked sideways. A giant asteroid slammed into Jupiter’s largest moon, ...

The planets offer exciting views in April. Jupiter is a brilliant object in the evening sky, although the observing window ...

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Plus: Observe two stunning spirals, see Venus reappear as a morning star, and enjoy the Last Quarter Moon in the sky this ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Jupiter's largest moon Ganymede is generating "killer" waves of electrons that astronomers say could damage spacecraft going on future missions. These electromagnetic waves can be found all around ...

Towards the end of the mission, the JUICE probe dedicates its experiments in detail to the largest moon in our Solar System, Ganymede. The focus is on a suspected ocean under a kilometre-thick ice ...

Ganymede, and Callisto. The Moon is non-luminous, meaning that it does not produce light. We see the Moon because it reflects light from the Sun, and half of the Moon’s surface is always ...

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

Jupiter's four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet. They were spotted by Galileo Galilei more than 400 years ago, in 1610 .