The X5.1-class eruption from sunspot AR4274 is this year's most powerful solar flare and Earth is in the firing line.
E arth is preparing for a multi-day barrage of solar material, with the most severe space weather impacts now forecast for ...
The back-to-back eruptions caused radio blackouts across two hemispheres as the active sunspots turn to face Earth.
Sunspot AR3474 detonated with an X1.8 solar flare on November 4, sending an ultraviolet wave silencing South America's ...