Those little brown marks on the skin confuse many people. Both involve excess pigment in the skin, but they arise from different causes and behave differently. Freckles often bring back memories of ...

Add Yahoo as a preferred source to see more of our stories on Google. The sun on June 30. Magnetic fluctuations on the sun's surface can be seen here. Sunspots are cooler than other parts of the sun's ...

Add Yahoo as a preferred source to see more of our stories on Google. A cluster of sunspots 15 times the size of Earth rolled into view. These have been fizzing with activity and could send solar ...

You, Me, and Life GeographyI wrote about the 'Sun' in a Life Geography article the other day. Come to think of it, I ...

"I accidentally stayed out in the sun too long, and my skin feels warm..." There are nights when you look in the mirror and ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A whopping sunspot that is getting larger and crackling with activity ...

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, ...

NASA’s Solar Dynamics Observatory has been tracking an enormous sunspot group, with real-time images of the sun. Credit: NASA NASA scientists studying the sun have detected an enormous group of ...

Sunspots are the most striking phenomenon of the solar magnetic field. After the invention of the telescope early in the 17th century, the Italian astronomer Galileo Galilei was the first to routinely ...

A cluster of sunspots has rolled into view of Earth and may send a solar storm our way as early as Saturday. The cluster includes about a dozen sunspots that are around 125,000 miles wide— about 15 ...