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,” ...

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 ...

Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares. Both sunspots are Earth-facing and could potentially deliver a solar storm. NASA's Solar Dynamics Observatory captured ...

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, ...

A cluster of sunspots 15 times the size of Earth rolled into view. These have been fizzing with activity and could send solar weather toward Earth as early as Saturday. Space weather is mostly ...

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 ...

"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 ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Sure, the sun’s light and heat make life possible on Earth, and ...

Astronomers have released photos of huge dark patches on the sun that are big enough to swallow our planet whole. These dark patches, known as sunspots, are of interest to astronomers because they ...

Just to remind everyone: The Day After Tomorrow is fiction. You might need such a reminder after a spate of press releases coming out of the recent National Astronomy Meeting in Wales. These releases, ...

With a techniques borrowed from earthquake detection, researchers are learning to predict where sunspots will boil-up. That ...

The sun may be the focal point of our solar system, but astronomers are still trying to understand some strange processes that unfold on the star, including sunspots. Sunspots show up like dark spots ...