A massive solar eruption from sunspot 4100 has launched a fast-moving CME toward Earth, with G4-class geomagnetic storm ...

The sun is currently in a period of heightened activity, known as solar maximum, where solar flares and eruptions are more ...

EDT on June 1, 2025, instruments registered a geomagnetic K-index of 8, creeping toward 9, meaning a solar storm has arrived.