Universe extension in Hoy Quran

Every story has a beginning,and our universe,s beginning is Big bang. “In the beginning, there was darkness, and then, bang—giving birth to an endless, expanding existence of time, space and matter. Now, see further than we’ve ever imagined, beyond the limits of our existence, in a place we call  The  Universe.”

after the Big bang"explosion that after it our universe created"because of existence of gravity our universe started to expanding,and this expanding was continue to now,and Scientists are believing that this expanding will continue for ever"meaning that end of our universe"Edwin Powell Hubble american scientist discovered this in 1929.he showed that the galaxy,s are Being away from each other and he Concluded that if we came back in the time,the galaxy,s distant,s were decrease and decrease to the point that all of galaxy,s were collected in a   principal atom .after Hubble anatomists discovered big bang,s magnetic waves that accepted his theory.

a movie a bout expanding of universe

while the man discover this scientific fact in 20th centery,Holy Quran Muslims Holly book said a bout it in 1400 years age.

:in Chapter 51: ADH-DHARIYAT Verse 47 written that

 we built the heaven with might, and we widely extended it.

but there is a mistake in English translates of Quran in this Verse if you go to Arabic passage writed that:

وَالسَّمَاء بَنَيْنَاهَا بِأَيْدٍ وَإِنَّا لَمُوسِعُونَ ﴿۴۷﴾

word "لَمُوسِعُونَ "meaning that expanding from past and now(past continuous)and in future.not meaning that we expended.you can test it on Arabic dictionary,s.and God in holly Quran in 1400 years a go said a bout expansion of universe and said that this expansion continue to day and will continue in future.

in the the other English translates of verse writes word power:

SHAKIR: and the heaven, we raised it high with power, and most surely we are the makers of things ample 

we know that the reason of Big bang explosion is a great power that caused explosion and on of the reasons of expanding of universe is gravity power and Lord said a bout power in Quran.

 Muhammad, the Prophet of Islam was a illiterate such as all of men of his age.and on that ages human had a bit information a bout space and thinks that the universe was eternal,if Quran was not from God and Muhammad was not Prophet of God how can say a bout scientific fact discovered in 20th ?