The northern lights seen over much of Oregon on Jan. 19 may be visible again tonight as minor to strong geomagnetic storms ...

Auroras may be visible from Alaska to Colorado tonight as a speedy coronal mass ejection impacts Earth.

The storm could also impact power systems and spacecraft operations.

The Sun has hurled a massive cloud of charged gas toward Earth, a coronal mass ejection that can carry billions of tons of plasma and temporarily reshape the planet’s magnetic shield. As the ...

Here’s what you’ll learn when you read this story: Referred to as a “stealth storm,” a recent coronal mass ejection went undetected until it hit Earth. Stealth coronal mass ejections are more common ...

The CME traveled toward Earth at impressive speeds of 620–870 miles per second (1,000–1,400 km/s), setting the stage for aurora enthusiasts to prepare for a potential visual spectacle. However, ...