Sunspot AR4618 erupted with an M4.4-class solar flare causing a coronal mass ejection (CME) that may give Earth a glancing blow. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

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

Eyes to the sky! A passing solar storm may spark bright auroras across Canada on Thursday and Friday nights! On the morning ...

The planet is experiencing the most powerful solar event since 2003—and it's bringing spectacular Northern Lights.

Add Yahoo as a preferred source to see more of our stories on Google. Over the past 24 hours, the sun has been especially active, unleashing a rapid-fire series of powerful solar flares, including an ...