New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

The two largest planets in our solar system, Jupiter and Saturn, also have the largest satellite systems, or the most moons. At present, Jupiter's reported moon count stands at more than 100 moons, ...

Jupiter is known as the king of moons. The massive planet has 95 known moons orbiting around it, and some are so large they could almost be considered planets themselves. But what would it actually be ...

Astronomers have discovered 12 new moons around Jupiter, putting the total count at a record-breaking 92. That's more than any other planet in our solar system. Saturn, the one-time leader, comes in a ...

Ganymede may generate its magnetic field through a core that is still forming today, challenging long-held ideas about ...

If you have binoculars, you may even spot some of Jupiter’s largest moons as tiny pinpoints beside the planet NICHOLAS KAMM/AFP via Getty A waxing crescent moon and Jupiter will appear close together ...

Jupiter is the king of moons. With 95 of them orbiting the gas giant, some are so large they rival planets in size. But what would it actually be like to live on one of these moons? Let’s imagine ...