The Qur’an is to Muslims the infallible word of God that they assert has been perfectly preserved on a tablet in heaven. They believe these words were given to Muhammad their prophet by the angel Gabriel. See Qur’an 10:15, 37; 56:77-79; 69:44-48; 85:21-22. It is unchangeable, inerrant, and many Muslims believe in the implementation of Islamic shariah law because of their view that it is God's unchangeable word.
The earth is spread out like a carpet.
The Qur’an 20:53, talks of God who has, "...made the earth for you like a carpet spread out..." (see also 71:19). This could hardly be a clearer way of describing the earth as flat. The Qur’an repeatedly refers to how the earth is "wide" or "spread out" (Qur’an 13:3; 15:19; 18:7; 19:6; 21:30; 35:40; 41:10; 43:10; 50:7; 51:48; 55:10; 78:6; 79:30; 88:20), which is not the language used to describe a round sphere.
The Qur’an has many genetic myths about how humans are born, etc. The Qur’an 86:6-7 says that semen comes from between a man's backbone and ribs. We know today from biology studies that semen comes from the male genitalia, so once again, a very inaccurate statement coming from the Qur’an.
The sky could fall on our heads!
This god also reassures us in the Qur’an 22:65, that "He witholds the sky from falling on the earth except by his leave: for Allah is most kind and most merciful to man." The Qur’an is saying that the sky is a hard opaque object that could fall and injure/kill us. This is certainly how it appeared to ancient people, but not what we know from scientific evidence. Perhaps this god knew that the earth's atmosphere was just thin air and a mixture of gasses. But this would make him into a deceiving god, making an empty threat and telling blatant lies!
The sun moves around the earth.
The Qur’an talks of the earth in terms as if it were stationary, with the sun and stars moving around the earth (Qur’an 2:258; 21:33; 36:40; 52:49; 53:1). "It is he who created the night and the day, and the sun and the moon: all (celestial bodies) swim along, each in it's rounded course" (21:33). We know today that the sun is far bigger than the earth, and is drawing the round earth in it's orbit.
Is
the moon made of green cheese?
The Qur’an says that moon was cut in half (54:1). The Hadith confirms this fairytale, by repeatedly telling us that Muhammad cut the moon in half (Bukhari 4:830-832; 5:208-211; 6:387-390). How Muhammad actually did this, we are not told. Why no one else in the world saw it we are not told. How he managed to cut through hundreds of miles of solid rock we are not told. How it put it together again, we are not told. Personally, I find it easier to believe that a cow jumped over the moon.
http://www.bibleandscience.com/science/quran.htm