image: The sun emitted a mid-level solar flare, an M6.6-class, peaking at 11:32 pm EDT on Oct. 28, 2014 – the latest in a series of substantial flares from a giant active region on the sun that first erupted with a significant solar flare on Oct. 19. NASA's Solar Dynamics Observatory, which constantly observes the sun, captured images of the event. To see how this event may affect Earth, please visit NOAA's Space Weather Prediction Center at http://spaceweather.gov, the US government's official source for space weather forecasts, alerts, watches and warnings. view more
Credit: NASA SDO