The Northern Lights (aurora borealis) may be seen in 15 northern U.S. states this week, with a geomagnetic storm forecast for ...

Flares and solar eruptions can impact radio communications, electric power grids, and even pose risks to spacecraft and astronauts." ...

The sun's corona—the outermost layer of its atmosphere, visible only during a total solar eclipse—has long intrigued ...

A powerful and worrying event is taking place on the surface of the Sun. A highly active region, known as Sunspot AR4087, is ...

Sunspot AR3089 erupted with a series of m-class flares that culminated with an M7-class flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths. Credit: Space.com | foo ...

NASA's Solar Dynamics Observatory captured the moon transit the sun. Sunspot AR3311 was active with m-class flares. Credit: Space.com | footage courtesy: NASA/SDP/Helio Viewer| edited by Steve Spaleta ...