A erupted with M1 and M6 class solar flares. Watch the fireworks in these views from NASA's Solar Dynamics Observatory.

Large and complex sunspot groups characterize the surface of the dynamic sun during its activity cycle. A new camera system ...

A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar ...

Chile is constructing the Extremely Large Telescope (ELT), the world's largest optical and near-infrared telescope, atop ...