
The sun just flexed its power, and the Earth felt the shockwave immediately. In the largest solar eruption of 2025, a massive burst of energy classified as an X5.1-class flare tore from the sun, unleashing a torrent of radiation and charged particles.
The effect on our planet was instantaneous and dramatic. The flare caused a sweeping radio blackout across large parts of Europe and Africa around 5 a.m. ET.