The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based ...

The twin eruptions briefly disrupted radio signals across the dayside of Earth.

The powerful magnetic field belonging to the sun is generated far beneath the visible surface. The sun's visible disk has ...

At more than one million degrees, the sun's atmosphere—the corona—is incredibly hot; but not everywhere. Time and again, huge ...

Scientists have found a way to identify magnetic fields on the far side of the sun, a region that cannot be seen from Earth.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. On Feb. 22, there were zero ...