The Qur'an doesn't describe any science, because every claims that Muslims have made, have been shown to be wrong.
First, Qur'an 21:30 doesn't describe the Big Bang.
If you actually understood the Big Bang, you would know that there was no Earth in the beginning of the universe. There were no galaxies, stars or planets. The universe is about 13.7 billion years old. The first generation of stars, didn't form until 560 million years after the Big Bang.
And the Earth (4.67 billion years old) along with the rest of the solar system didn't form until 9 billion years after the Big Bang. Our Sun is actually a much younger star, and at about the same age of earth; the Sun is probably 3rd, or even 4th generation star.
So how could 21:30 describe the Big Bang, when the earth didn't exist yet, for it to be cleave from the heavens (universe)?
Modern Muslims who used the 21:30 to claim this refer to the Big Bang cosmology are wrong, because the Earth didn't exist in the first place. And that because the verse is describing
heaven as the SKY, and NOT as the universe.Which lead to my third point.
And earth wasn't the only object that didn't exist in the early young universe. And this leads me to my second point.
Second...
And the last part of the verse,
"and made from water every living thing?" Muslims are wrong about that too, because in the the early universe after the Big Bang, there were no water. That's because before there were stars, there were no water.
Water is a molecule of one oxygen atom and 2 hydrogen atoms. The Big Bang explained that before there were stars, there were only elements in the periodic table that exist, the 3 lightest elements:
Oxygen didn't exist at this time.
It is star that make heavier elements in the earlier universe.
The star, especially at the birth of young star, they are mostly comprise of hydrogen, with helium being the second abundant element in a star. The star used lighter element, more specifically hydrogen, to bind two hydrogen atoms to form helium. This
process of heavier element formed from lighter elements, is known as
stellar nucleosynthesis.
It is only when the star run out of hydrogen fuel to bind them into helium, that the star will begin to fuse helium atoms to into elements heavier than helium, like the other gases - nitrogen, oxygen and carbon. Heavier elements will only form at NEAR the last stage of star life cycle.
So there were no Earth and no water, at the early stage of the young universe.
...
THIRD. The verse 21:30 describe the SKY, not the universe, because the author is not aware of the universe. The word "heaven" is not the only word to describe the sky; there are also "dome", "vault", "firmament", "roof", "canopy" (or "tent" or "pavilion"), "expanse". See point 4.
The sky only referred to what WE, humans, can see from the ground, without the aid of optical telescopes and radio telescopes. The "heaven" that the Qur'an described are the same one that the bible (Genesis 1) and every other religious cosmologies describe - the SKY.
And that would lead me to my fourth point.
FOURTH. The verse 21:30, in which the verse describe about separation of the SKY from Earth, is not a original idea. What 21:30 describe, is precisely the same with Genesis' "second day" of creation:
The reasons why I have provided 4 different translations, is so that (A) you can compare these translations that show the separation of the sky (or heaven) and the Earth, and (B) like the verse in Qur'an 21:30, Genesis also provided water, so that you can compare that against them to the Qu'ran.
The translations to the Qur'an 21:32 show that like Genesis 1:6-8, chose to give different names to the SKY or heaven, like roof, ceiling and canopy:
And even the bible (Genesis) is not the first to describe dividing the Earth from the sky.
In Sumerian poem of Gilgamesh - Bilgames and the Netherworld - from the late 3rd millennium BCE:
None of the texts I had quoted (Genesis, Qur'an or the Epic of Gilgamesh), describe the Big Bang.
And personally I don't think you (or any other Muslims here) understand the concept of the Big Bang, especially if you think the Earth was there, before all the earliest stars.
This is why I think most Muslims are backward thinking with science and technology; they have lost the abilities to think. All I see Muslims (who mixed science with religion) here taking their own verses OUT-OF-CONTEXT, and twisting science to fit with their scriptures.
If you don't understand the science, then don't make silly claims of what you don't understand.
One of the biggest fool out there, is Zakir Naik. Naik has done the same things as so many Muslims have done here, they used propaganda, not science, to promote the Qur'an, and it is disgustingly dishonest of Naik. This is why there are only so few respected Muslim scientists out there today, but even these scientists have made no new discoveries, because they have lost the abilities for scientific inquiry and scientific discoveries.