NOAA warns of likely G1-class geomagnetic storms on Thursday, Feb. 5, through Friday, Feb. 6, as a coronal mass ejection from ...

The Sun is putting on quite a show right now. Earth-facing sunspot region 4366 has been erupting almost non-stop since it emerged on January 30, producing six X-class solar flares so far.

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

A G1 or G2-class geomagnetic storm is possible on Wednesday, Feb. 4, as a coronal mass ejection from a powerful X8-class solar flare struck Earth's magnetic field.

Northern lights occur when a solar flare interacts with Earth's atmosphere.

Fired from a vast sunspot, the "coronal mass ejection" is expected to reach Earth on either Thursday or Friday this week.

Sunspot 4366 is a significant area of magnetic instability on the Sun's surface. It formed unexpectedly and has rapidly expanded to nearly half the size of the sunspot that was responsible for the ...

A coronal mass ejection releases from the left side of the sun in May 2024. - SOHO (ESA & NASA)/NASA/SDO/AIA/JHelioviewer/D. Müller For the first time, astronomers ...

The X8.1 flare was accompanied by a coronal mass ejection (CME), a significant release of plasma and magnetic field from the sun's corona. Modeling suggests that the bulk of the material from this CME ...

Solar flares are characterized by intense bursts of energy and radiation from the Sun’s surface. In a matter of just a few ...

A spectacular aurora show appeared over much of the U.S. overnight Nov. 11-12 with little notice, and forecasters aren't sure what might be in store next. It's possible auroras might be seen again ...