After solar activity spent several decades on the decrease, the number of sunspots, flares and coronal mass ejections is once ...

The sun has become more and more active over the last 16 years, in a turn that surprised scientists and could affect space ...

The sun has become increasingly active since 2008, a new NASA study shows. Solar activity is known to fluctuate in cycles of ...

A stream of solar wind escaping through a coronal hole on the sun is heading toward Earth and should arrive on Sunday, Sept.