November 21, 2012
NASA Spacecraft Observe November 20 Solar Eruption
NASA Image Release: Karen C. Fox, NASA's Goddard Space Flight Center, Greenbelt, Md.
On Nov. 20, 2012, at 7:09 a.m. EST, the sun erupted with a coronal mass ejection or CME. Not to be confused with a solar flare, a CME is a solar phenomenon that can send solar particles into space and can reach Earth one to three days later. When Earth-directed, CMEs can affect electronic systems in satellites and on Earth.