SOHO
11th February 2012, 02:20
As the STEREO (Ahead) observed, a very long filament remained stable over a two-day period...
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/10feb2012/)
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/10feb2012/)