In March 2025, astronomers announced the discovery of 128 additional moons around Saturn! That brings Saturn’s total up to 274. Why so many? Experts think a spectacular collision millions of years ago blasted rocky bits into orbit around the massive planet, creating many of the moons.
Illustration by Magictorch
Math,
Saturn's Moon BOOM
Check out this infographic about the moons in our solar system
By Elizabeth Carney
From the October/November 2025 Issue
Key Focus Area:
Measurement and Data,
Other Focus Areas: Numbers & Operations, Solar System & Universe
Standards
Illustration by Magictorch; NASA/JPL/University of Arizona/University of Idaho (Titan)
Saturn is the second-largest planet in our solar system. It’s 9 times wider than Earth.
The newly discovered moons are only a few miles across or less. The smallest moons are the size of a sports stadium.
Titan is Saturn’s largest moon. It’s the same size as the planet Mercury, which is 2/5 the size of Earth.
Shutterstock.com (Planets)
Number of Moons in Our Solar System
Mercury: 0
Venus: 0
Mars: 2
Jupiter: 95
Saturn: 274
Uranus: 29
Neptune: 16
What do you notice about planets with more than two moons?
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