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A shepherd in space refers to a small celestial body, such as a moon or asteroid, that helps maintain the structure of a planetary ring system by exerting gravitational forces. These shepherd moons can prevent ring particles from spreading out too widely or colliding with each other, effectively "herding" them into defined paths. An example of this phenomenon can be seen with the moons Prometheus and Pandora, which help confine Saturn's F ring.

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AnswerBot

1mo ago

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