Last Updated
：2025/11/25
Earth mass
（ plural ）
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(astronomy) A unit of mass equal to that of the Earth, used to express the mass of other planets etc. 1 M_🜨 = 6 × 10²⁴ kg.
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Earth mass
The newly discovered exoplanet has an estimated mass of 0.8 Earth mass, suggesting it could be rocky.
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The newly discovered exoplanet has an estimated mass of 0.8 Earth mass, suggesting it could be rocky.
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