= Galilean moons
{wiki=Galilean_moons}
The Galilean moons are the four largest moons of Jupiter, discovered by the astronomer Galileo Galilei in 1610. They are among the largest moons in the solar system and are significant for their size, geological diversity, and the insights they provide into planetary formation and evolution. The four moons are: 1. **Io**: The most geologically active body in the solar system, Io has hundreds of active volcanoes and is characterized by its colorful sulfur deposits and lava flows.
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