Was Mohammad a true messenger of the Creator/God/Allah? (2)

"Have not those who disbelieve known that the heavens and the earth were of one piece, then We parted them, and we made every living thing of water? Will they not then believe? " Quraan 21:30

أَوَلَمْ يَرَ الَّذِينَ كَفَرُوا أَنَّ السَّمَاوَاتِ وَالأَرْضَ كَانَتَا رَتْقًا فَفَتَقْنَاهُمَا وَجَعَلْنَا مِنَ الْمَاء كُلَّ شَيْءٍ حَيٍّ أَفَلا يُؤْمِنُونَ
الأنبياء : ٣٠

"We have built the heaven with might, and We it is Who make the vast extent (thereof). " Quraan 51:47

وَالسَّمَاء بَنَيْنَاهَا بِأَيْدٍ وَإِنَّا لَمُوسِعُونَ
الذاريات - الآية ٤٧

Quraan was revealed to Mohammad ~1400 years ago. The verses above are affirming that heavens and earth (the universe) were one piece then was parted, it also affirms that space/heaven was built with great might and is still expanding.

Were the verses talking about the Big Bang?
Apparently yes.

"The theory that the universe began in a state of extremely high density and has been expanding since some particular instant that marked the origin of the universe. The big bang is the generally accepted cosmological theory; the incorporation of developments in elementary particle theory has led to the inflationary universe version." Sci-Tech Encyclopedia: Big bang theory

Is it possible that Mohammad knew about that fact ~1400 years ago?
If he was the messenger of the creator who created the whole universe then why not? Anyone knows about the universe better than its creator?