One of the largest auroral displays in recent years appeared over Norway in 2011, captured in the time-lapse video below. These auroras appear mostly green, as high energy particles hitting the Earth's atmosphere cause the air to glow as electrons resettle into their oxygen hosts. 

Watch here:

The Aurora from TSO Photography on Vimeo.

Credit & Copyright: Terje SørgjerdMusic: Gladiator Soundtrack: Now we are Free