National Aeronautics and Space Administration
Goddard Space Flight Center
Sun-Earth Day 2010: Magnetic Storms
IMAGE GALLERY
The solar surface is like a magnetic carpet with small fields reconnecting to make larger ones (Courtesy - SOHO).
NASA Fact
The August 4, 1972 solar flare was so powerful that, by some estimates, a spacesuited astronaut would have received a lethal does of radiation.