The idea that the Koran explains science is confirmation bias, but I'll respond anyway. Revelation 6:14 And the heaven departed as a book folded up Lifted from previously existing biblical passage. Expansion of the universe is accelerating, crunch is unlikely anyway. On the expanding statements, this is a very vague claim and it takes a leap of logic to conclude that it must reference the big bang. I would ask if every reference to the heavens in the entirety of the book consistently means outer space. Plato and Archimedes estimated the circumference of the earth quite accurately around 400 BCE and 250 BCE respectfully. The shape of earth was old news by the time the Koran was written. Referencing that there is a sun and a moon in our sky is hardly impressive. Ancient Greeks and ancient Egyptians had gods responsible for these celestial bodies. Here's some more "science", where clearly the sun orbits the earth and rests in mud for the night. An illiterate most certainly would come up with that while claiming divinely inspired knowledge that already exists. Qur’an 18:83-86—And they ask you about Dhul-Qarnain. Say: “I shall recite to you something of his story.” Verily, We established him in the earth, and We gave him the means of everything. So he followed a way. Until, when he reached the setting place of the sun, he found it setting in a spring of black muddy (or hot) water. And he found near it a people.