And We have made galaxies {1} in the sky and adorned it for those who see.
‘Burooj’means strong rooms constructed on the walls of forts for guarding those living inside. Other words from the same root alphabets also convey the sense of exhibition, exposing, big stars etc. the Arabic equivalent of star is ‘Najam’, therefore ‘Burooj’ in this verse may refer to galaxies which contain billions of stars which are individually not visible to the naked eye because of very long distances, the galaxy as a whole appearing externally like a big star. It is estimated that there are about 150 billion galaxies in the observable universe.
Galaxies:
The word ‘Najam’ is translated as star and a galaxy contains Millions of stars. The word ‘Burooj means strong rooms constructed on the walls of forts for safety, it has also been used for conveying the sense of exhibition, places of safety, big stars etc. In view of these meanings, ‘Burooj’ may refer to the galaxies which also exist in Millions.