It’s #SunDay! This week’s (Dec. 5 - 11) space weather report includes: · 1 X-class flare · 18 M-class flares · 42 coronal mass ejections · 1 geomagnetic storm This video from NASA’s Solar Dynamics Observatory (SDO) shows the week’s activity. The X-class flare, which erupted just after midnight Eastern time on Dec. 8, appears at about 1:26 in the video, on the right just below the Sun’s equator. Solar eruptions occur when the Sun's magnetic fields become twisted and tangled. Most flares tend to e