415 reactions · 150 shares | What is a solar flare? What causes solar flares? How do solar flares affect Earth? Find out the answers to these questions and more in our new solar flare FAQ!  https://go.nasa.gov/3mFimHr | NASA Space Alerts | Facebook

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

An X7.1 (R3 - Strong) solar flare erupted from NOAA/SWPC Active Region 3842 on October 1st, 2024. This was the second strongest flare thus far in Solar Cycle 25, only bested by an X8.7 flare on May 14th of this year. This latest flare was observed by the GOES-16 satellite X-ray sensor (XRS) and peaked at 6:20pm EDT (2220 UTC). The flare was impulsive in nature but was associated with some USAF solar radio observatory reports that may indicate a possible coronal mass ejection (CME) could be assoc