地ち球きゅう型がた惑わく星せい

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Meanings

1

terrestrial planet; rocky planet

Astronomical term for a planet composed primarily of silicate rocks or metals, such as Mercury, Venus, Earth, and Mars.

地ち球きゅう型がた惑わく星せいには、水すい星せい、金きん星せい、地ち球きゅう、火か星せいが含ふくまれる。
Terrestrial planets include Mercury, Venus, Earth, and Mars.

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