According to the scientists, this year was supposed to happen solar maximum, the peak of the 11-year cycle of our sun. But, as it turned out, the solar activity is at unexpectedly low.
"The number of sunspots are significantly lower than the values that we observed in 2011, and strong solar flares were rare," - says NASA.
These results surprised the experts who questioned the accuracy of the data collected by NASA.
However, the physicist Dean Pesnell found another explanation for this phenomenon.
"This is the solar maximum," - he explained. "However, it differs from the expected world because it is split into two peaks. Previous two solar maximum in 1989 and 2001 also have two peaks."
The same thing could happen today. The number of sunspots increased in 2011 and decreased temporarily in 2012.
Pesnell expects that the second peak occurs in 2013: "I can predict the next peak in 2013, and it can last up to 2014."