In the field of [[astronomy]], the sky is also called the [[celestial]] [[sphere]]. This is an imaginary dome where the [[sun]], [[stars]], [[planets]], and the [[moon]] are seen to be traveling. The celestial sphere is divided into regions called [[constellations]].[http://en.wikipedia.org/wiki/Sky] | In the field of [[astronomy]], the sky is also called the [[celestial]] [[sphere]]. This is an imaginary dome where the [[sun]], [[stars]], [[planets]], and the [[moon]] are seen to be traveling. The celestial sphere is divided into regions called [[constellations]].[http://en.wikipedia.org/wiki/Sky] |