image: Image captured by the Swedish Solar Telescope of a region on the surface of the sun approximately 8,000 km x 8,000 km in size. The brighter area near the middle of the image indicates the presence of Alfvén waves, which are invisible to the unaided eye. This image accompanied the report "Alfvén Waves in the Lower Solar Atmosphere," by D. Jess and colleagues appearing in the March 20, 2009 issue of Science. view more
Credit: Image courtesy of Dr. David Jess, Queen’s University Belfast, via <i>Science</i>-AAAS