* Astronomy

NASA Spacecraft Observe Nov. 20 Solar Eruption

On Nov. 20, 2012, at 12:09 UT, 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.
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