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The spacecraft carefully skimmed the outer edge of the planetary ring to collect particle samples.
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The spacecraft carefully skimmed the outer edge of the planetary ring to collect particle samples.
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Related words
planetary ring
Noun
Japanese Meaning
(天文学) 惑星（例: 土星）を取り巻く、塵や小さい衛星などが集まり、平らな円盤状の軌道をなす環。環内の隙間は『シェパード衛星』と呼ばれる小さい衛星の存在が原因となる。
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