What is a natural satellite?
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It’s any natural object that orbits a planet. The moon is a satellite of the earth, Jupiter’s moons are satellites of Jupiter, etc. “Satellite” is a catch-all term for both moons and much smaller objects, like captured asteroids or the bits of rock and ice comprising the rings of Saturn, for example.
Some authors use “satellite” as a term for any thing that orbits another thing (e.g. the earth is a satellite of the sun) but apparently this is not accepted by all.
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