[ Earth Observation Programmes ]
09 OCT. 2013
Date de publication
5813
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Earth’s magnetic field is thought to be generated largely by an ocean of superheated, swirling liquid iron that makes up Earth’s outer core 3000 km under our feet. Acting like the spinning conductor in a bicycle dynamo, it generates electric currents and thus the continuously changing electromagnetic field.
Crédits
ESA/AOES Medialab
Licence
ESA Standard Licence
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