How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it ...

How far it is from the sun: 886 million miles (1.4 billion kilometers), on average How big it is: 72,400 miles (116,500 km) across, or almost 10 times the size of Earth. How many moons it has: At ...

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...

The objects around the ringed planet are tiny, but some of them may have formed relatively recently in the solar system’s history. By Jonathan O’Callaghan Jonathan O’Callaghan reported on an earlier ...

Saturn and Jupiter have been locked in a competition for the planet with the highest number of moons. But as it happens, Jupiter never really stood a chance: Saturn has just won by a huge margin. That ...

A mere decade ago astronomers knew of just 62 moons around Saturn. Today the ringed planet boasts a staggering 274 official satellites. That’s more than any other world in the solar system—and far too ...

Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far beyond any other planet in our solar system. A natural-color view of ...