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 ...

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 ...

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, ...

The rotation of the Sun has long been a thorn in the flesh of solar physicists: an active region becomes interesting and is out of sight as the Sun rotates. At the eye of the earth, any ...

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 ...

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.

"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 ...

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,” ...

The solar cycle continues to ramp up with currently the largest number of sunspots in the last two decades and maybe even longer. NOAA’s Space Weather Prediction Center(SWPC) reports the estimated ...

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 ...