SOHO
10th January 2011, 00:00
A solar filament became unstable and erupted from the far side of the Sun (Jan. 4, 2011). STEREO, due to its near total views of the Sun from two spacecraft, was the only solar mission able to see it. Filaments are elongated clouds of cooler gases suspended above the Sun by magnetic forces. Many become unstable and erupt.
http://soho.nascom.nasa.gov/pickoftheweek/old/07jan2011/Fil_erupt_Jan.jpg
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/07jan2011/)
http://soho.nascom.nasa.gov/pickoftheweek/old/07jan2011/Fil_erupt_Jan.jpg
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/07jan2011/)