M. H. Shakir, The Holy Quran; Arabic Text and English Translation; Foot-notes by M. H. Shakir (1974)
9. Say: What! do you indeed disbelieve in Him Who created the earth in two periods, and do you set up equals with Him? That is the Lord of the Worlds.
10. And He made in it mountains above its surface, and He blessed therein and made therein its foods, in four periods: alike for the seekers.
11. Then He directed Himself to the heaven and it is a vapour, so He said to it and to the earth: Come both, willingly or unwillingly. They both said: We come willingly.
12. So He ordained them seven heavens in two periods, and revealed in every heaven its affair; and We adorned the lower heaven with brilliant stars and (made it) to guard; that is the decree of the Mighty, the Knowing.*
13. But if they turn aside, then say: I have warned you of a scourge like the scourge of Ad and Samood.
14. When their apostles came to them from before them and from behind them, saying, Serve nothing but Allah, they said: If our Lord had pleased He would certainly have sent down angels, so we are surely unbelievers in that with which you are sent.
* Verses 9, 10, 11 & 12 are for the astronomers and scientists to ponder, understand and investigate.