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

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

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 has 79 moons and is known as the 'king of the planets'. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jupiter is the largest planet in ...

The moons are all tiny, barely two miles across in size. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A multitude of new moons have made their ...