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

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

The number of known moons in our Solar System has been rising for centuries, but astronomers say it has probably peaked – for ...

A new study by Kobe University planetologist Hirata Naoyuki has revealed that Ganymede, the largest moon in our solar system, experienced a massive asteroid impact approximately 4 billion years ago.

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

The smashups are thought to have occurred at least 100 million years ago, but the moons they created are new to astronomers.

A stunning Blood Moon March 13/14 caps off plenty of planetary action and sparkling stars in the sky this week.

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 ...

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 ...

NASA's Europa Clipper is about to use Mars' gravitational pull to slingshot itself towards Jupiter's smallest moon later this week. The craft launched from the agency's Kennedy Space Center in October ...