Solar flares, the sudden bursts of radiation that erupt from the Sun’s atmosphere, have become a topic of intense scrutiny ...

Sunspot activity increases on November 1, 2025, as new regions emerge on the Sun. Solar flares, coronal mass ejections, and geomagnetic conditions are monitored by NASA/SDO and EarthSky.

The "severe" solar storm in effect has the potential to trigger the northern lights, causing a stunning display of colors visible from parts of the U.S. Skyler Caruso is a Writer and Reporter of ...

The ionospheric D-region, spanning approximately 60–95 km above Earth’s surface, is a dynamic boundary where complex photochemical processes influence radio wave propagation. Solar flares, through ...

Sunspot AR3184 erupted with an X1.9-class solar flare. NASA's Solar Dynamics Observatory (SDO) captured the fireworks. The sunspot has been very active since it rotated into SDO's view. Credit: ...