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地殻形成

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The moons of Mars, Phobos and Deimos. Phobos is the larger of the two moons, and is the closer of the two to Mars. Phobos has an average radius of 11 km, while Deimos has an average radius of 6 km.

ボレアリス盆地火星の北半球を形作った巨大衝突の謎

ボレアリス盆地火星巨大衝突フォボス