Planets that orbit farther than Earth: Mars, Jupiter, Saturn, Uranus, and Neptune. Of these, the four from Jupiter to Neptune are generally large (about 4 to 11 times the diameter of Earth), and contain spectra of methane, ammonia, etc. (→ Jovian planets). Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
地球より外側を公転している惑星。火星,木星,土星,天王星,海王星。このうち木星から海王星までの4個は,一般に大型で (地球の約4~11倍の直径) ,メタン,アンモニアなどのスペクトルがみられる (→木星型惑星 ) 。
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