Spotless Sun Sparks Unusual Pink Auroras

Source - Space Weather News for Dec. 26, 2016: http://spaceweather.com

SPOTLESS SUN SPARKS PINK AURORAS: For the past three days and nights, sky watchers around the Arctic Circle have witnessed a strange display of pink and white auroras. Many veteran observers say they've never seen anything quite like it.  Stranger still, the display was ignited by a completely blank sun. No sunspots were involved. What's going on? 

Pictures and an explanation are highlighted on today's edition of Spaceweather.com