January 7, 2011

Sunspot AR 1121 Unleashes Brilliant X-ray Flare

Increasingly active sunspot 1121 has unleashed one of the brightest x-ray solar flares in years, an M5.4-class eruption at 15:36 UT on Nov. 6th. This close-up video shows the detail of the flare and its aftermath. credit: NASA

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