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Moons
All the planets except Mercury and Venus have moons
More than 50 moons total
Only 7 big ones
Satellite
Parent
Diameter
Av Density
Planet
(km)
(kg/m
3
)
Moon
Earth
3476
3340
Io
Jupiter
3630
3570
Europa
Jupiter
3138
3020
Ganymede
Jupiter
5262
1940
Callisto
Jupiter
4800
1860
Titan
Saturn
5150
1880
Triton
Neptune
2700
2070
Textbook Figure 7-4: Moons compared to Mercury
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