Professor of the Department of Geosciences, University of Mainz, Germany.
Professor Kroener is one of the world's most famous geologists, becoming well known among his colleague scientists for his criticisms against the theories of some of the major scientists in his field. Sheikh Abdul-Majeed A. Zindani met with him and presented several Qur'anic verses and Hadith which he studied and commented upon.
"Thinking where Muhammad came from... 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."
"Somebody who did not know something about nuclear physics 1400 years ago could not, I think, be in a position to find out from his own mind for instance that the earth and the heavens had the same origin, or many other questions that we have discussed here...
If you combine all these and you combine all these statements that are being made in the Qur'an in terms that relate to the earth and the formation of the earth and science in general, you can basically say that statements made there in many ways are true, they can now be confirmed by scientific methods, and in a way, you can say that the Qur'an is a simple science text book for the simple man. And that many of the statements made in there at that time could not be proven, but that modern scientific methods are now in a position to prove what Muhammad said 1400 years ago."