NASA, ESA, A. Simon (Goddard Space Flight Center), and M.H. Wong (University of California, Berkeley) (CC BY 4.0)
A giant light enough to float in water, if you could find a bathtub big enough, wearing the most spectacular rings in the solar system.
Saturn is a gas giant made mostly of hydrogen and helium. Its bright rings are made of countless pieces of water ice and rock, from dust grains to boulders; they are hundreds of thousands of kilometres wide but mostly only tens of metres thick.
Its average density, about 0.69 g/cm³, is lower than that of water. Its largest moon, Titan, has a thick atmosphere, and the small moon Enceladus sprays water ice from an underground ocean.
知識ベースの衛星
データ源
ツールとレッスンは学習のための単純化モデルを使用します。航法、ミッション計画またはどんな作戦決定にも使用してはなりません。証明書は無料で認証されていません。 教育用コンテンツの免責事項を読む