A 417-year-old drawing by Johannes Kepler has just helped solve a major solar puzzle. The 1607 sketch features sunspots that ...

Add Yahoo as a preferred source to see more of our stories on Google. Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares. Both sunspots are Earth-facing and could ...

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 ...

The same group of sunspots that created intense northern lights on May 10 has now re-emerged from the back side of the sun. The group of sunspots is still really active with solar flares. As soon as ...

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 ...

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, ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A spotless sun as viewed on ...

BOSTON - For the first time since 2005, our planet is now under a "severe geomagnetic storm watch." This may sound awfully scary, but in actuality this is exciting news! The northern lights may be ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A giant black spot has appeared on the sun’s disk — and ...

The sun on February 9 spots a massive sunspot, seen as a darker area against the yellow. Eclipse glasses are good for more than just solar eclipses. You can use them at other times of the year to ...

During partial phases of a solar eclipse, one popular activity is to project and capture solar crescents when trees are in leaf. Tiny spaces between leaves can act as natural pinhole cameras, ...