Stig Östlund

tisdag, juli 03, 2012

Almost-X Flare Illuminates Earth on July 2nd‏

ALMOST X-FLARE: Big sunspot AR1515 erupted on July 2nd at 10:52 UT, producing an M5.6-class solar flare that almost crossed the threshold into X-territory. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash >> http://spaceweather.com/

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