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NASA : AR1520's Parting Shot: July 19, 2012 M7.7 Flare.
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Out of direct view but still active, sunspot 1520 has released an M7.7 class solar flare in the early hours of July 19, 2012. This video was taken by the Solar Dynamics Observatory (SDO) and shows tBy: vril | Comments: 4 | Views: 1072 | Votes: 2 | Shared: 0
Leaked: Jul-19-2012 in Science and Technology
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