Which was created first, heaven or earth?

Which was created first, heaven or earth?
Heaven	Earth
79:27-30 Are ye the harder to create, or is the heaven that He built? He raised the height thereof and ordered it; And He made dark the night thereof, and He brought forth the morn thereof. And after that He spread the earth....	2:29 He it is Who created for you all that is in the earth. Then turned He to the heaven, and fashioned it as seven heavens. 41:9-12 Say (O Muhammad, unto the idolaters): Disbelieve ye verily in Him Who created the earth in two Days ... Then turned He to the heaven ... Then He ordained them seven heavens in two Days ....