Solar Corona - as viewed during a total eclipseCutaway of the sun, showing core, radiative and convective zones, and corona - painting by Don Dixon for Scientific American diagram shows how electrons spiral along the sun's magnetic field lines ; digital, 2006 Solar magnetic fields snap and rejoin thousands of miles above the Sun's surface, releasing a burst of x-rays. Digital Artwork © 2007 Don Dixon / cosmographica.com Infographic showing how solar flares are created by the breaking and rejoining of magnetic field lines. Artwork © 2007 Don Dixon / cosmographica.com Solar System DiagramsMercury