Northern lights occur when a solar flare interacts with Earth's atmosphere.

Solar flares and geomagnetic storms can have very significant effects on satellites, airplanes and GPS and electrical systems ...

A rapidly growing sunspot has fired off at least 18 M-class and three X-class flares in just 24 hours, including an intense X8.3 eruption.

A strong solar flare peaked just after 9 a.m. Tuesday. What does that mean?

Intense solar storms from a powerful sunspot region have raised concerns worldwide, with ISRO closely monitoring over 50 Indian satellites amid risks of radio blackouts and signal disruptions.

Colorful auroras could dazzle skywatchers again on Monday night amid a severe geomagnetic storm and what the National Oceanic and Atmospheric Administration said was the largest solar radiation storm ...

The Sun is now at the most active point in its roughly 11‑year solar cycle, and scientists say the current peak has arrived earlier and more forcefully than first expected. As activity climbs, ...

Add Yahoo as a preferred source to see more of our stories on Google. The European space probe Solar Orbiter delivers images of the sun, including observations of what is, from our perspective, its ...

Close-up observations of the Sun explain how solar flares start, grow, and send high-energy particles racing through space.

NASA has reported a X4.2 solar flare, so what does it mean? We break down what a solar flare is and how it connects to the aurora Australis.

After Storm Fern cut power to millions, GoodPower CEO Leah Qusba explains what really failed on the grid, and why wind and solar weren’t to blame.