إِنَّا زَيَّنَّا السَّمَاءَ الدُّنْيَا بِزِينَةٍ الْكَوَاكِبِ (6)
(37:6) We have adorned the lower heaven with the adornment of the stars *5
*5) "Lower heaven" : The nearer heaven which can be seen with the naked eye, without the help of a telescope. The worlds beyond which can be seen through the telescopes of different powers, and the worlds which have not so far been observed through any moans, are the distant heavens. In this connection, one should also note that "sama " is not something definite and determined, but man generally has been using this word and its other synonyms for the heavens since the earliest times.