The Earth has all the attributes that are needed for life. One of them is the atmosphere, which serves as a shield protecting living things. Today, it is an established fact that the atmosphere is made up of different layers lying on top of one another. Just as it is described in the Qur'an, the atmosphere is made up of exactly seven layers. This is certainly one of the miracles of the Qur'an.

One fact about the universe revealed in the verses of the Qur'an is that the sky is made up of seven layers.

"It is He Who created everything on the earth for you and then directed His attention up to heaven and arranged it into seven regular heavens. He has knowledge of all things." (The Qur'an, 2:29)

"Then He turned to heaven when it was smoke. In two days He determined them as seven heavens and revealed, in every heaven, its own mandate." (The Qur'an, 41:12)

The word "heavens", which appears in many verses in the Qur'an, is used to refer to the sky above the Earth, as well as the entire universe. Given this meaning of the word, it is seen that the Earth's sky, or the atmosphere, is made up of seven layers.

Indeed, today it is known that the world's atmosphere consists of different layers that lie on top of each other. Furthermore, it consists, just as is described in the Qur'an, of exactly seven layers. In a scientific source, the subject is described as follows:

Scientists have found that the atmosphere consists of several layers. The layers differ in such physical properties as pressure and the types of gasses. The layer of the atmosphere closest to Earth is called the TROPOSPHERE. It contains about 90% of the total mass of the atmosphere. The layer above the troposphere is called the STRATOSPHERE. The OZONE LAYER is the part of the stratosphere where absorption of ultraviolet rays occurs. The layer above the stratosphere is called the MESOSPHERE. The THERMOSPHERE lies above the mesosphere. The ionized gases form a layer within the thermosphere called the IONOSPHERE. The outermost part of Earth's atmosphere extends from about 480 km out to 960 km. This part is called the EXOSPHERE.
(Carolyn Sheets, Robert Gardner, Samuel F. Howe; General Science, Allyn and Bacon Inc. Newton, Massachusetts, 1985, s. 319-322)

If we count the number of layers cited in this source, we see that the atmosphere consists of exactly seven layers, just as stated in the verse.

1. Troposphere

2. Stratosphere

3. Ozonosphere

4. Mesosphere

5. Thermosphere

6. Ionosphere

7. Exosphere

Another important miracle on this subject is mentioned in the statement "(He) revealed, in every heaven, its own mandate.", in verse 12 of Sura Fussilet. In other words, in the verse, God states that He assigned each heaven its own duty. Truly, as seen in previous chapters, each one of these layers has vital duties for the benefit of human kind and all other living things on the Earth. Each layer has a particular function, ranging from forming rain to preventing harmful rays, from reflecting radio waves, to averting the harmful effects of meteors.

One of these functions, for example, is stated in a scientific source as follows:

Earth's atmosphere has 7 layers. The lowest layer is called troposphere. Rain, snow and wind only take place in the troposphere.
(http://muttley.ucdavis.edu/Book/Atmosphere/beginner/layers-01.html)

It is a great miracle that these facts, which could not possibly be discovered without the technology of the 20th century, were explicitly stated by the Qur'an 1,400 years ago.