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 ...

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 ...

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, ...

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 ...

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.

NASA is constantly monitoring the Sun with the Solar Dynamics Observatory (SDO), which is an observation device built specifically for imaging and keeping track of the Sun, its magnetic field, its ...

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, ...

Most of us perceive time as an arrow, a one-way trip into the future. And while that’s true, nature has a way of interpolating circular patterns onto that linear model — day follows night, the seasons ...

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 ...