What is that between the heavens and the earth? Dr. Bucaille explains as follows: "The creation outside the heavens and outside the earth is a priori difficult to imagine. To understand these verses, reference must be made to the most recent observations on the existence of cosmic extragalactic material, and one must indeed go back to ideas established by contemporary science on the formation of the universe . . ." (p. 145). 

Scientists tell us that a primary nebula condensed, then divided up into fragments. These fragments, these galactic masses, further split up into stars and their sub-products, the planets. Each time such a division or split occurred, there remained extra material apart from the principal elements newly formed. The scientific name for these extra materials is 'interstellar galactic material'. 
Is this extra material significant? Yes. Experts in astrophysics are quite aware of such material which have "a tendency to interfere with photometric measurements" (The Bible, the Quran and Science, p. 149). The extra material is so rarefied that they may be referred to as dusts or smokes or gases. Yet they altogether occupy so much total space that they may correspond to "a mass possibly greater than the total mass of the galaxies" (p. 149). 

Again, we must face up to the implication of all this. How could a man living fourteen hundred years ago have known about interstellar galactic material? Was Muhammad, on whom be peace, well versed in modern astrophysics? Or is the Quran nothing but the Word of God? Allah, the only true God, declares in His book: "The revelation of the scripture is from Allah, the Mighty, the Wise. Surely We [Allah] have revealed the scripture unto you [Muhammad] with truth; so worship Allah, making religion pure for Him (only)" (Quran 39:1-2).