Astronomy › Section I · Giant planets, moons, and rings › Topic I.4
Moon systems and Jupiter's Galilean moons
The giant planets have hundreds of moons between them, and Jupiter's four largest form a solar system in miniature: a dead, cratered world, an ocean under ice, a restless giant and the most volcanic body we know.
In this topic
- Icy, dark and numerous
- Regular and irregular moons
- The four Galilean moons
- Worked example: how much rock is in Callisto?
- Callisto: an old, quiet world
- Ganymede: the largest moon
- Europa: an ocean under ice
- Io: the volcanic moon
- Tidal heating and the resonance
- Worked example: checking the resonance
- Common mistakes to avoid
- Key takeaways
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