Sun's strange behavior baffles astronomers
Constant interaction with Earth makes it important to track solar activity
By Denise Chow
updated 9:28 a.m. CT, Tues., June 15, 2010
The sun's temper ebbs and flows on what scientists had thought was a pretty predictable cycle, but lately our closest star has been acting up.
Typically, a few stormy years would knock out a satellite or two and maybe trip a power grid on Earth. Then a few years of quiet, and then back to the bad behavior. But an extremely long stretch of low activity in recent years has scientists baffled and scrambling for better forecasting models.