Study the magnetic fields in a sunspot pair as observed by the Helioseismic Magnetic Imager, March 29, 2010

Study the magnetic fields in a sunspot pair as observed by the Helioseismic Magnetic Imager, March 29, 2010

Magnetic fields in a sunspot pair, as observed by the Helioseismic Magnetic Imager on board the Solar Dynamics Observatory, March 29, 2010. White and black trace opposite magnetic polarities.
NASA/GSFC/SDO/HMI
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