Happy #SunDay! This week’s space weather report includes: · 7 C-class solar flares · 8 M-class flares · 24 coronal mass ejections · 1 geomagnetic storm This video from NASA’s Solar Dynamics Observatory shows activity on the Sun over the past week. To learn more about solar flares, visit: https://go.nasa.gov/3m9w4p4 | NASA Space Alerts

SLOW SOLAR FLARE: Solar flares occur when magnetic fields get tangled. Lines of magnetic force above sunspots criss, cross, and explode in a flash of electromagnetic radiation. This process, called "magnetic reconnection", usually happens in a matter of minutes. Earlier today (June 7th), NASA's Solar Dynamics Observatory witnessed an explosion that took two hours to unfold. This leisurely C1-class solar flare happened in the magnetic canopy of sunspot AR2661. Often, slow explosions like this one

The Sun emitted a strong solar flare on Nov. 30, 2025, peaking at 9:49 p.m. ET. NASA’s Solar Dynamics Observatory captured an image of the event, which was classified as X1.9 class: go.nasa.gov/4alXf6P Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground. However — when intense enough — they can disturb the atmosphere in the layer where GPS & communications signals travel. To see how such sp

😯👉On February 4, the Sun unleashed an intense X4.2 solar flare, captured by NASA’s Solar Dynamics Observatory. Solar flares in the X-class category are the most powerful type, releasing enormous bursts of energy and radiation into space. This flare reached its peak at 7:13 a.m. Eastern Time and was carefully observed by researchers who track solar activity. Even though the radiation from flares like this cannot pass through Earth’s atmosphere to harm people on the ground, these eruptions can s