Public Domain. Credit information: Hinode JAXA/NASA [via pingnews]. Additional information from source:
Taken by Hinode's Solar Optical Telescope on Nov. 20, 2006, this image reveals the structure of the solar magnetic field rising vertically from a sunspot, an area of strong magnetic field, outward into the solar atmosphere. At the edges of the sunspot the field lines bend over to reconnect with field of opposite polarity.
