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,” ...

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

Sunspots and their behavior are direct manifestations of the Sun’s magnetic field, which we still don’t fully understand. Here’s what we do know: Ex-tremely hot gas, called plasma, in the Sun’s outer ...

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 ...

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 ...

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, ...

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 ...

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 ...