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

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 ...

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

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 ...

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

This story was updated 1:42 p.m. ET to include information from the most recent update from NOAA space weather officials. Space weather experts are keeping close watch for a solar storm expected to ...