Strong X-Class Solar Flare Heralds Geomagnetic Storm | Video

A potent X1 class flare, blasting a dazzling coronal mass ejection, left the Sun early on March 5th 2012 caused by sunspot cluster 4X the size of Earth. An earlier M2 class flare also produced a CME that may cause a geomagnetic storm.
credit : SPACE.com / SDO / SOHO / NASA Goddard Space Weather Lab
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