Astronomy Picture of the Day . ... 22.09.2009 . ... 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. ... 2009 2010 . ... Publications with keywords: aurora . ...