Aurora Over Yellowknife . ... In this case, a picturesque lake lies in front of you, beautiful green auroras flap high above you, brilliant stars shine far in the distance, and a brilliant moon shines just ahead of you. ... Since aurora are ultimately started by solar activity , this current flurry of aurora is somewhat surprising, given the historic lack of sunspots and other activity on the Sun over the past two years. ... NASA Web Site Statements, Warnings, and Disclaimers . ...