SOHO
7th March 2012, 22:40
A large sunspot region (AR1429) unleashed an X5 class flare (the largest of this solar cycle) late on...
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/07mar2012/)
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/07mar2012/)