Departing Sunspot Blows M-Flare 'Goodbye Kiss' | Video
Thursday, October 2, 2014 - 17:30
in Astronomy & Space
Sunspot AR2172-AR2173 erupted with an M7.3-class flare on October 2nd, 2014. The eruption was not Earth-directed, as it was on the Sun's western limb and rotating out of view (as seen by NASA's Solar Dynamics Observatory).