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Eventually they will face the same problems with the definition of what constitutes a moon as the recent definition of what is a planet. How small does a moon have to be before it is considered nothing more than a rock or debris?
If they discovered a rock the size of a basketball orbiting Saturn, is it a moon? How about "dwarf moon"? What if it is the size of bus? If something the size of a bus were considered to be a moon, would that have made Skylab a temporary moon of the earth? If one of these smaller moons were to break up, which one retains the original name, the larger? Does the other bit get an "a" designation or another name? What if the two bits are bigger than some of the other small moons, would that warrant a completely new name for the smaller fragment? Hmm....
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