71.نُوْح

اَلَمۡ تَرَوۡا كَيۡفَ خَلَقَ اللّٰهُ سَبۡعَ سَمٰوٰتٍ طِبَاقًاۙ‏

Have you not seen how Allah has created seven (or many) heavenly spheres corresponding to one another (layer upon layer)?