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

The Sun has shifted into a volatile mood, hurling vast clouds of charged particles into space and putting Earth squarely in the firing line. Forecasters are now watching for signs that a so‑called ...

Our Sun, that steady burning ball of gas that has faithfully illuminated Earth for billions of years, is slowly but relentlessly growing brighter. This might sound like good news, but it's actually ...

A new sunspot group has quickly grown and is spewing out the most intense type of solar flare. Effects on Earth are forecast ...

The photo, shared by NOAA's Space Weather Prediction Center on X, shows our planet silhouetted by the solar corona. The image was taken by GOES-19, the newest in the Geostationary Operational ...

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.

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

From this past July to our upcoming January, Earth gets nearly 2 million miles closer to the sun. At the same time, average highs in Colorado Springs and Pueblo go from 86 and 93 degrees to 45 and 48 ...

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.

Coronagraphs are telescopes equipped with an occulting disk to block out the overwhelming radiation emanated from the visible surface of the Sun, along with optical stops and filters that are ...