Ganymede is the largest moon in the solar system, even bigger than the planet Mercury. If it were orbiting the Sun instead of Jupiter, it might have been classified as a planet. Ganymede is the ...

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

Thursday, Aug. 5 marked 10 years since NASA sent Juno off on a one-way trip to explore the largest planet in our solar system. The probe didn't reach its destination, Jupiter, until July 2016.

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

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

Dust off your old telescope on a clear night and look up. If you find Jupiter, you’ll likely see four small dots to the side of the gas giant: they are the Galilean moons, four of the 95 natural ...

(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 ...

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