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

Solar flare triggers tech blackouts as X8.11-class eruption disrupts GPS, streaming, and satellite services ahead of incoming ...

The Sun has entered one of its most volatile moods in years, hurling a torrent of powerful flares and charged particles into ...

Shimmering green lights have once again danced across Earth’s upper atmosphere, captured in a striking timelapse from the ...

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.

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

The flares are coming from a solar region that was created in late January.

Fired from a vast sunspot, the "coronal mass ejection" is expected to reach Earth on either Thursday or Friday this week.

Multiple M-class and X-class solar flares erupted within 24 hours as an active sunspot released intense radiation affecting Earth’s upper atmosphere and radio communications.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CAPE CANAVERAL, Fla. (AP) — The sun produced ...

The Sun is putting on quite a show right now. Earth-facing sunspot region 4366 has been erupting almost non-stop since it emerged on January 30, producing six X-class solar flares so far.

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