I would like to bring an interesting point to your attention. In the verse it is said that God will return it to its former state. Therefore, to be able to understand the end of the universe, we have to go back to the first three chapters of our book where the beginning of Creation is described. The fact that they appear in the same sura is meaningful (The beginning is explained in the sura The Prophets; verse 30, in the same sura, verse 104, the end is explained).
On that day We will fold the heaven, like the folding of a book. Just as We initiated the first creation, We will revert it. This is Our promise. We will certainly fulfill it. (21:104)Do not these disbelievers see that the heavens and the earth were an integrated mass, which We then split, and from water We made all living things? Will they not believe even then? (21:30)With power did We construct Heaven. Verily, We are expanding it. (51:47)
We deduce from the above two verses;



