If it is true, the mantle rocks of the Moon and the Earth should be the same geochemically.

如果这是真的，月球和地球的地幔岩石从地球化学上来看应该是相同的。

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The Moon's mean density is much lower than that of Earth but is about the same as that of Earth's mantle.

月球的平均密度比地球低得多，但与地球的地幔密度大致相同。

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The formation of Earth's crust protected the inner layers of Earth from the high-energy particles in space, reducing the temperatures of the mantle and the core.

地壳的形成保护了地球的内层不受太空中高能粒子的影响，降低了地幔和地核的温度。

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Earth's mantle, for comparison, holds roughly 50 to 300 ppm water, researchers said.

MSN: Scientists say parts of Mars interior are as wet as Earth's

Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopes of uranium, thorium and potassium in the earth's superheated mantle.

FORBES: Looking For Energy, Google Goes To Hell

Unlike any other asteroid known today, Vesta has an iron core surrounded by layers of mantle rock and crust, similar to Earth and Mars, preliminary gravity and density measurements suggest.

WSJ: Asteroid Vesta Gets a Close Study