Jupiter already reigns as king of the planets as the largest one in our solar system. And now, the gas giant has the most known moons, too. Astronomers have observed 12 additional moons orbiting Jupiter, bringing its total number of confirmed moons to 92. With these recent discoveries, Jupiter has surpassed Saturn to claim the title of planet in the solar system with the most moons. All of the new moons orbit Jupiter at a distance from its surface, taking more than 340 Earth days to do so. All of these moons are small; just five of those nine moons are believed to have a diameter larger than 8 km.