SOHO
4th January 2013, 17:10
By overlaying and fading between a surface image (in filtered white light) of the Sun to an image that reveals the magnetic structures...
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/04jan2013/)
More... (http://soho.nascom.nasa.gov/pickoftheweek/old/04jan2013/)