Surah 51. Az-Zariyat, Ayah 7

I.e., "think of the Creator of this great universe and, hence, of your responsibility to Him".

 Or “By the heavens with their marvellous orbits.”

The study of the numerous regular orbits of the planets and irregularly regular orbits of comets, and the various motions, visible or invisible, of the fixed stars or revolving stars, form in themselves a network of knowledge or science, of a highly technical nature; the highest astronomy or mathematics can only barely reach its fringe. But these have all a fixed Plan and Purpose under Allah's Dispensation. In them variety leads to Unity. In contrast look at the confused medley of doctrines, views, and dicta put forward by the Sceptics, as described in the next verse.