jupiter
木星
解説 Definition
太陽系で最も大きい惑星。地球より遠い位置を公転し、ガスジャイアントに分類される惑星です。
Jupiter is the largest planet in the solar system and the fifth planet from the Sun. It is a gas giant known for its powerful storms, including the Great Red Spot, and its large system of moons.
覚え方のコツ Memory Tip
惑星名なので通常 Jupiter と大文字で書きます。ローマ神話の最高神 Jupiter の名が惑星に使われ、「天空の父」にさかのぼる名前です。太陽系最大の惑星という特徴を、神々の王の名と結び付けましょう。Jupiter's moons、the Great Red Spot、a gas giant などが代表的な組み合わせで、木星に関する文脈をすぐ作れます。
Write Jupiter with a capital J because it is the proper name of a planet. Connect its great size with Jupiter, the chief god of ancient Roman religion: the largest planet carries the name of the king of the gods. Useful factual anchors are the fifth planet from the Sun, a gas giant, the Great Red Spot, and Jupiter’s moons. These details distinguish it from Saturn, which is especially recognized for its rings. The same spelling can name the Roman god, so the surrounding astronomical or mythological context determines which meaning is intended.
例文
Jupiter is the largest planet in our solar system.
木星は太陽系で最も大きい惑星です。
The telescope revealed Jupiter's giant red spot.
望遠鏡は木星の巨大な赤い斑点を明らかにしました。
Jupiter has over 80 moons orbiting around it.
木星の周りを回転している80以上の衛星があります。
jupiter の類義語・関連語
jupiter の語源・成り立ち Etymology
Jupiter はラテン語 Iuppiter に由来し、古代ローマの主神の名がそのまま惑星名になりました。語源は「明るい空・天」を表す語根と pater「父」で、jovial や Zeus も同系統なので、「天空の父の星」と考えると木星の名が腑に落ちます。
The planet is named after Jupiter, the chief god of ancient Rome. English Jupiter comes from Latin Iuppiter or Jupiter. The name developed from an ancient Indo-European expression combining a word associated with the bright sky or daylight and a word meaning “father,” giving the traditional interpretation “sky father.” The same ancient linguistic family is connected with the Greek god Zeus. The Roman divine name was applied to the prominent planet and passed into astronomical English.
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