Scientists: Sun could reach second peak of activity this year

03/6/2013 |

Some scientists are predicting that the sun may be getting ready for a second peak in its 11-year activity cycle this year, possibly lasting into next year. The sun is in a calm after a particularly active 2011. The last time it had a double-peaked activity cycle was in 1989 and 2001. If a second peak does occur, scientists point to activity in the sun's southern hemisphere as the main cause.

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