The back-to-back eruptions caused radio blackouts across two hemispheres as the active sunspots turn to face Earth.

A moderate solar flare might affect radio communications on Earth, the National Oceanic and Atmospheric Administration said Wednesday.

As a particularily active sunspot region rotates into view, the sun has released its largest solar flare since June.

A geomagnetic storm surprised forecasters overnight as material from recent solar eruptions arrived earlier than expected, briefly reaching strong (G3) levels. Now, NOAA has a G3 geomagnetic storm watch in effect as Earth braces for further impacts from multiple coronal mass ejections (CMEs) launched in quick succession from sunspot region AR4274.

Introduction In recent weeks, astronomers have been captivated by a remarkable series of solar flares emanating from a specific active region on the sun. These solar events, known as Coronal Mass Ejections (CMEs),

A strong geomagnetic storm watch has been issued for Thursday night into Friday morning after a number of strong solar flares. That mean's there's an increased chance for the northern lights.

From communications outages to a brush with nuclear war, solar events like flares and coronal mass ejections have shaped human history.

Research by university scientists suggests that solar flares may be far hotter than previously believed, offering new insights into the Sun’s behavior. The findings, recently published in the Astrophysical Journal Letters, indicate that ions within solar ...

NASA's Solar Dynamics Observatory captured sunspot AR3386 blast a long-duration X1.6-class solar flare and X1 flare. See time-lapses of the flares in multiple wavelengths. Credit Space.com | footage c

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 wavelengths.