Here is a beautiful aurora sparked by the CME that hit the earth.
SOLSTICE GEOMAGNETIC STORM: A coronal mass ejection (CME) hit Earth's magnetic field on Dec. 21st, sparking a G1-class geomagnetic storm. For sky watchers around the Arctc Circle, the longest night of the year was filled with colorful lights. Truls Tiller sends this picture from Tromsdalen, Norway:
http://www.spaceweather.com/archive.php ... &year=2014