The Quran mentions phenomena that were unknown at the time. In fact, many were only recently discovered by modern science.
Modern science confirms 1400 year old revelations from the Koran.

Fourteen centuries ago, our example this elusive knowledge about the universe already surrendered:

-The long genesis of the universe:

"We created the heavens and the earth and what is created in six days between the two ..." (50:38)
Big Bang:

"Do not the unbelievers see that the heavens and the earth were a cohesive mass? We have them then separated and We made from water every living thing. Will they not then believe?" (21:30)

-The smoke-like mass from which the heavens and the earth were created:

"Then He turned to the sky was smoke and He said to it and to the earth: 'Come willingly or unwillingly." They both said: "We come willingly" (41:11)

-The choke points causing ripple universe:

"Heaven, we have built it with power. Truly, we extend him" (51:47)

-Celestial bodies with their own jobs:

"In heaven with his job!" (51:7)

"It did not fit the sun to reach the moon and the night he catches the day. They float each in an orbit. "(36:40)

"He made for you the sun and the moon subservient in their regular course and He made for you night and day subservient." (14:33)

"And He it is Who has created the night and the day, the sun and the moon created. They float each in an orbit." (21:33)

-Iron is taken from the space:

"And We have sent Our messengers sent with clear proofs, and We have the book and the balance sent down with them, so that people keep justice alive. And We have sent down iron. It has great strength and a lot of utility for people .. . " (57:25)

-For life requires water:

"... And we have already made the living water. Will they not then believe?" (21:30)

-The atmosphere protection:

"And we have made the sky a protective roof. Yet they turn away from His signs off." (21:31)

-For example, God describes the stages of human development in the womb:

We created man from an essence of clay, then We placed him as a drop of fluid in a safe place, then We made that drop into a clinging form, and We made that form into a lump of flesh, and We made that lump into bones, and We clothed those bones with flesh, and later We made him into other forms –– glory be to God, the best of creators! (Quran, 23:12-14)

Professor Keith Moore, a prominent scientist of anatomy and embryology at the University of Toronto, Canada, has stated, “It has been a great pleasure for me to help clarify statements in the Quran about human development. It is clear to me that these statements must have come to Muhammad from God … because almost all of this knowledge was not discovered until many centuries later.”

-The Quran also describes the expansion of the universe: “And it is We who have built the universe with (Our creative) power; and verily, it is We who are steadily expanding it” (51:47). It was not until 1925, when Edwin Hubble provided evidence of receding galaxies, that the expanding universe came to be accepted as a scientific fact.

Professor Alfred Kroner, a world-famous geologist, explained: “Thinking about many of these questions and thinking where Muhammad came from, he was after all a Bedouin, I think it is almost impossible that he could have known about things like the common origin of the universe, because scientists have only found out within the last few years with very complicated and advanced technological methods that this is the case.”