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The middle-aged Moon had a magnetic field
Planetary magnetic fields are created by what is known as a dynamo effect, where a magnetic field is created through an electrically conductive fluid - usually molten iron - by the rotation of the ...
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Mars may have been habitable more recently than thought
Mars' dynamo was "driven by convection within the ... Arts and Sciences and a lead author of the study, in a statement. "Planetary magnetic fields are our best probe to answer a lot of those ...