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... proportion."
"With such a huge volume, it must have an extremely low density so that it can be used as a satellite of the earth. But the density of rocks on the surface of the moon is extremely high, so high that it must be almost hollow to have the current mass."
Regarding the information provided by the rebels, the doctors in the research department were crazy about it.
They really have always suspected that the moon is a shell containing some low-mass matter, wit ...
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