The first eight moons of Saturn were discovered with direct telescopic observation, but long-exposure photographic techniques in the early twentieth century led to the discovery of six more moons, so it nearly doubled the number of moons Saturn has.
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Aso it nearly doubled the number of moons Saturn has
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Band it nearly doubled the amount of moons Saturn known to has
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Cnearly doubling the number of moons Saturn has
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Dnearly doubling the amount of moons Saturn has
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Enearly doubling the number of moons Saturn was known to have
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正确答案: E