128 new Saturn moons just announced. Incredible! Saturn already had 146 known moons, more than any other planet in our solar system. But on March 11, 2025, the International Astronomical Union’s Minor Planet Center added a whopping 128 new moons to Saturn’s count, bringing its total of moons to 274. Here they are color-coded by their MPEC release. Orange: MPEC 2025 E153, Purple: MPEC 2025-E154, Green: MPEC 2025-E155.