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Structure of Mars

Structure of Mars

R350/0205

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Credit

MARK GARLICK / SCIENCE PHOTO LIBRARY MARK GARLICK / SCIENCE PHOTO LIBRARY

Caption

Internal structure of Mars, cutaway artwork. The inset at lower right shows Earth and Mars at the same scale. Mars is a rocky planet. It has a partially molten core of iron and iron sulphides (yellow). Overlying the core is a thick mantle (orange), which underlies the crust (brown). The crust of Mars is around 100 kilometres thick, compared to the 10-70km thick crust of Earth. The lack of a completely molten region around the core means that Mars does not generate a uniform strong magnetic field, which would have protected the planet's atmosphere from the solar wind. It is thought the Martian atmosphere was stripped away after the core cooled.

Release details

Model release not required. Property release not required.

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