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Mercury: Surface, Interior, and Orbit
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Astronomy
AST.136 Mercury: Surface, Interior, and Orbit
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Mercury is small but surprisingly dense. Which interior feature best explains that combination?
A
A hollow center leaves only a thin rocky shell.
B
A very thick atmosphere adds most of Mercury's mass.
C
A large iron-rich core makes up a high fraction of the planet.
D
A global ice shell is denser than metal.
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