Which Earth feature, analogous to the 'chair' test, acts as an invisible shield against the solar wind?

Answer

The magnetic field generated by the movement of molten iron in the outer core.

The Earth’s magnetic field, generated by the movement of molten iron, acts as a shield deflecting harmful charged particles from the solar wind.

Which Earth feature, analogous to the 'chair' test, acts as an invisible shield against the solar wind?
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