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Start with the full category, then apply the exact boundary: NASA’s five major moons only. Smaller satellites are outside this October 2026 set. You only need one qualifying answer. A longer name is not automatically rarer.
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Shortest accepted input at 65+ points
OberonOberon · 75 points · 6 characters
Oberon is one of the five major moons of Uranus identified by NASA.
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Umbriel95 points · Shortest accepted spelling: Umbriel
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- Match the parent planet and the named subset. Being a real moon is insufficient if it orbits a different planet or falls outside the listed major moons.
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Each entry belongs to the bounded set defined by the prompt. The named source supports the underlying facts; our editorial scoring is a separate layer.
Source: NASA · Uranus moons: facts ↗
Reference version: 2026-10-02. See our answer policy for how we handle aliases and omissions.