Forecasters expect a coronal mass ejection and a powerful X-class solar flare could impact the Earth starting on Thursday.

Add Yahoo as a preferred source to see more of our stories on Google. It's back! NOAA's aurora viewline maps for where the northern lights could be visible tonight and tomorrow night have returned.

When you think of the northern lights, you usually think of swirls of colors visible under cold skies in Alaska or Canada. But the northern lights aren't a complete stranger to Florida residents, and ...