The sun is not only our closest stellar neighbor, it's also the star we understand the most. As we've observed it over the ...

All you need to do is make sure solar filters and eclipse glasses are free of marks, scratches, and holes. If they're still safe to use, you can wear them to watch the sunspot groups grow, decay, and ...

Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares. Both sunspots are Earth-facing and could ...

While the Sun’s solar flares strongly correlate with sunspots, observations of more than 14,000 other stars show this is not generally the case.

Sunspot AR3038 is massive and NASA's Solar Dynamics Observatory has had its eye on it. Watch a time-lapse of it growing to ...

NASA has detected a large grouping of sunspots — dark patches on the sun — known as AR3576, which have increased in size in the last month and could be a risk for strong solar flares. Solar flares, ...

Observing an eclipse of the sun is always fascinating, but on March 29, 2025 — when a partial solar eclipse is visible in the Northern Hemisphere — there will be an extra reason to do so. As well as ...

"Highest monthly average sunspot number since September 2002!" tweeted solar physicist Keith Strong on Sunday. "The June 2023 [sunspot number] was 163.4, the highest value for over 20 years." In ...

BOSTON - For the first time since 2005, our planet is now under a "severe geomagnetic storm watch." This may sound awfully scary, but in actuality this is exciting news! The northern lights may be ...

Astronomers have detected a massive group of sunspots being referred to as a "sunspot archipelago." The group is made up of at least six different sunspots, and astronomers warn it could spell trouble ...

Sunspots — those marks that aren't freckles or moles — are signs you’ve spent your fair share of time soaking up the sun. “Sunspots are your skin’s response to daily exposure to ultraviolet rays,” ...