On April 17, 2016, an active region on the sun’s right side released a mid-level solar flare, captured here by NASA’s Solar Dynamics Observatory. This solar flare caused moderate radio blackouts, according to NOAA’s Space Weather Prediction Center. Scientists study active regions – which are areas of intense magnetism – to better understand why they sometimes erupt with such flares. This video was captured in several wavelengths of extreme ultraviolet light, a type of light that is typically invisible to our eyes, but is color-coded in SDO images for easy viewing.
This site is an excellent resource for solar weather observation, information, and the monitoring of flare activity/forecasting as it pertains to Earth effects– including the influence of solar activity on earthquakes, volcanic events, and other useful reading.
@Observant, agree! Ben Davidson has done outstanding work relating sun activity to earthquakes. The weakening magnetic shield is worrisome. This 20 min video explains that quite well.