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

If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's second-largest moon has more impact craters on its surface than any other ...

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.

NASA's Voyager probes passed through Jupiter's system and snapped pictures of its largest moons, also known as the Galilean ...

But it hasn’t always been this way. Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet. They were spotted by Galileo ...

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

The solar system is home to bizarre moons like Enceladus and Callisto, each unveiling nature’s wonders and some of science’s ...

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

(Earth's Moon is 2,159 miles across, while Jupiter's largest moon, Ganymede, measures 3,270 miles.) They're also considered irregular, meaning their orbits are variably inclined, eccentric (oval ...

with more confirmed moons than all of the other planets combined. But it hasn't always been this way. Jupiter's four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered ...