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Largest Moons in the Solar System

Can you name the 15 largest moons in our Solar System?
By radius in km
Measurements may be outdated (as of May 2025)
Quiz by
bagel7571
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Last updated: May 30, 2025
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First submittedMay 30, 2025
Times taken24
Average score60.0%
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Radius (km)
Answer
Parent
2634.1
Ganymede
Jupiter
2574.7
Titan
Saturn
2410.3
Callisto
Jupiter
1821.6
Io
Jupiter
1737.4
Moon
Earth
1560.8
Europa
Jupiter
1353.4
Triton
Neptune
788.9
Titania
Uranus
Radius (km)
Answer
Parent
763.8
Rhea
Saturn
761.4
Oberon
Uranus
735.6
Iapetus
Saturn
606.0
Charon
Pluto
584.7
Umbriel
Uranus
578.9
Ariel
Uranus
561.7
Dione
Saturn
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