Aurora borealis: the science behind the dazzling northern lights
Northern Lights - Wikitravel
A brief history of aurora science - BBC Sky at Night Magazine
Northern Lights - Global wiki. Wargaming.net
Northern Lights – Travel guide at Wikivoyage
Learning English with Cambridge - Have you ever seen the northern lights yourself? You can find out more about them here: http://en.wikipedia.org/ wiki/Aurora | Facebook
Aurora Borealis May Be Visible in New York Due to Geomagnetic Storm