Stig Östlund

söndag, november 07, 2010

Bright Solar Flare

Active sunspot 1121 has just unleashed one of the brightest x-ray solar flares in several years, an M5.4-class eruption at 15:36 UT on Nov. 6th.
Pictures: http://spaceweather.com/

Radiation from the flare created a wave of ionization in Earth's upper atmosphere that altered the propagation of low-frequency radio waves.

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