The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The International Astronomical Union officially recognized 128 new moons orbiting Saturn, bringing the new total up to 274 moons .

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The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision about 100 million years ago.

Saturn has dozens of new moons, bringing it to a total of 274. All of the new moons are between 2 and 4 kilometres wide, but at what point is a rock too small to be a moon?

The objects around the ringed planet are tiny, but some of them may have formed relatively recently in the solar system’s history.

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.

Space scientists have announced Saturn has 128 new moons.