Quote:
Originally Posted by eburacum45
Retrograde moons have to be captured, I believe; more than half of Jupiter's satellites are retrograde. Having two or three other moons makes the capture process slightly more feasible, if I recall correctly.
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Captured it may be, but Triton is a counterexample to retrograde moons usually being small. The dynamics of intermingling sizeable direct and retrograde moons cannot fail to be interesting...