coronal mass ejections

A powerful solar outburst hit Earth Thursday, triggering a "severe" geomagnetic storm. Auroras could be visible as far south as California and Alabama, NOAA predicts.

Vibrant auroras could be visible as far south as Oregon and Pennsylvania tonight as Earth reels from a "strong" G3-class geomagnetic storm. However, the nearly full Harvest Moon may complicate viewing opportunities.

Auroras may once again be visible in northern parts of the U.S. this weekend as Earth braces for impact from a powerful coronal mass ejection.

Earth was hit by a "severe" G4-class geomagnetic storm on Monday morning, increasing the chances of auroras in the northern U.S. tonight.

A massive disturbance in the solar wind caused Earth’s magnetosphere to fly without its usual tail.

Vibrant auroras that were recently observed by millions of people across the globe were some of the most widespread in the last five centuries, NASA says. The light shows may have also reached the equator.

Between Friday (May 10) and Sunday (May 12), people across the world were treated to stunning aurora displays as Earth's magnetic field experienced its biggest disturbance since October 2003. The supercharged storm also messed with satellites and caused power grid irregularities.

Space weather experts warn that Earth could experience one of its worst geomagnetic storms in years after a gigantic, frenzied sunspot released five back-to-back solar storms directly at our planet. The explosive event could trigger vibrant auroras across large parts of North America.

Mars has had frequent planet-wide auroras in recent months, including an unprecedented trio of events in February. Experts say the sudden increase is the result of the ongoing solar maximum.

Despite nearing its most active period, the sun is unusually inactive right now and may not wake up again before the total solar eclipse on Monday (April 8). How will this impact our view of the spectacle?