29وَأَغطَشَ لَيلَها وَأَخرَجَ ضُحاهاAli UnalAnd He obscured its night and brought out its light of day.1In the beginning, the heaven was either in darkness, or there was no light-emitting object in it. So after fashioning the heaven, God placed light-emitting objects in it, such as the sun and the other stars, and He removed its darkness. This verse also means that He has made some celestial objects, including the earth, which have both darkness (night) and light (day), alternately.