Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares. Both sunspots are Earth-facing and could ...

Sunspot AR3234 erupted with several M-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Add Yahoo as a preferred source to see more of our stories on Google. "Sunspots 4114 erupted with an X1.2-class solar flare. Minutes lates, sunspot AR4115 "erupted in quick succession," according to ...

The storm could also impact power systems and spacecraft operations.

Speckles have cropped up on the surface of the sun, and they might be visible for people with the right pair of glasses. The dark splotches that have appeared are known as sunspots, areas that are not ...