http://www.designntrend.com/articles/6033/20130712/something-wrong-sun-scientists-discover-weakest-solar-cycle-100-years.htm
Theories as to why the solar maximum has been so weak are that it is part of a 100-year solar cycle,and that the power of the sunspots on the solar maximums has been steadily decreasing since the earlier half of the century.
Perhaps the most extreme suspicion is that the Sun is about to experience a Maunder Minimum,where the sun has almost no sunspots at all.
The last time this event occurred was in 1645.
Theories as to why the solar maximum has been so weak are that it is part of a 100-year solar cycle,and that the power of the sunspots on the solar maximums has been steadily decreasing since the earlier half of the century.
Perhaps the most extreme suspicion is that the Sun is about to experience a Maunder Minimum,where the sun has almost no sunspots at all.
The last time this event occurred was in 1645.