Global magnetic field,satellite map

Numéro d’image : 11696022
Global magnetic field,satellite map
Global magnetic field. Satellite map of a 6-month average of the Earth's magnetic field strength at its surface,as measured by the European Space Agency's three Swarm satellites (launched November 2013). The colour-coding (key at bottom) shows the magnetic field strength in nanotesla (nT) from 20,000 nT (blue) to 60,000 nT (red). This magnetic field,generated by the motion of molten iron in the Earth's core,protects the Earth from cosmic radiation and solar charged particles. The data shown here was obtained between 1 January and 30 June 2014. For the changes in the magnetic field over the same period,see image C022/9871
Licence : Droits gérés
Crédit: Science Photo Library / ESA / DTU Space
Taille de l’image : 5307 px × 3980 px
Model Release : Non requis
Property Release : Non requis
Restrictions :
  • This image may not be used to state or imply ESA endorsement of any company or product

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