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NASA’s SDO observes mid-level solar flare

The sun emitted a mid-level solar flare on the morning of May 22, 2013. The flare peaked at 9:38 a.m. EDT and was classified as an M7. M-class flares are the weakest flares that can still cause some space weather effects near Earth. In the past, they have caused brief radio blackouts at the poles.

Fuente : http://www.eurekalert.org/pub_releases/2013-05/nsf…

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