Happy #SunDay! This week’s space weather report includes: · 5 C-class solar flares · 1 M-class flare · 20 coronal mass ejections · 0 geomagnetic storms 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

How much damage could a powerful solar flare actually do—and are we ready for it? Two days ago, a massive solar flare erupted. If it had been facing Earth, it likely would’ve registered as a G5—the highest level on NOAA’s geomagnetic storm scale. That’s Carrington Event territory. This isn’t a prediction. It’s just science. And understanding science isn’t fear-mongering. A G5 could cause: Widespread electrical disruptions Major blackouts Internet and communication systems offline And let’s be ho