Surah 15. Al-Hijr, Ayah 16

My rendering of buruj as "great constellations" is based on the Taj al-'Arus; among the classical commentators, Baghawi, Baydawi and Ibn Kathir give the same interpretation, while Tabari (on the authority of Mujahid and Qatadah) explains this term as signifying "the stars" in general.

Evil having been described, not as an external thing, but as a taint of the soul, we have in this section a glorious account of the purity and beauty of Allah's Creation. Evil is a blot on it, not a normal feature of it. Indeed, the normal feature is the guard which Allah has put on it, to protect it from evil.

In the countless millions of stars in the universe which we see, the first step in our astronomical knowledge is to find marvellous order, beauty, and harmony, on a scale of grandeur which we appreciate more and more as our knowledge increases. The first broad belt that we distinguish is the Zodiac, which marks the sun's path through the heavens year after year and the limit of the wanderings of the moon and the planets. We make twelve divisions of it and call them Signs of the Zodiac. Each marks the solar path through the heavens as we see it, month after month. We can thus mark off the seasons in our solar year, and express in definite laws the most important facts in meteorology, agriculture, seasonal winds, and tides. Then there are the mansions of the moon, the mapping out of the Constellations, and the other marvellous facts of the heavens, some of which affect our physical life on this earth. But the highest lessons we can draw from them are spiritual. The author of this wonderful Order and Beauty is One, and He alone is entitled to our worship.