A solar storm reaches Earth (images)
On Sunday, a solar flare caused a portion of the plasma in the Sun's atmosphere to break off and fly out into space at a speed of about 5 million miles an hour. Seen here is the coronal mass ejection (CME) ejection of the plasma cloud breaking off from the sun.
January 24, 2012 8:20 AM PST
Photo by: NASA
| Caption by: Martin LaMonica
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