The Protected Roof
"We made the sky a preserved and protected roof yet still they turn away from Our Signs.."(The Qur'an, 21:32)
This attribute of the sky has been proved by scientific research carried out in the 20th century.
The atmosphere surrounding the earth serves crucial functions for the continuity of life. While destroying many meteors big and small as they approach the earth, it prevents them from falling to earth and harming living things.
In addition, the atmosphere filters the light rays coming from space that are harmful to living things. Interestingly, the atmosphere lets only harmless and useful rays- visible light, near ultraviolet light, and radio waves pass through. All of this radiation is vital for life. Near ultraviolet rays, which are only partially let in by the atmosphere, are very important for the photosynthesis of plants and for the survival of all living beings. The majority of the intense ultraviolet rays emitted from the sun are filtered out by the ozone layer of the atmosphere and only a limited-and essential-part of the ultraviolet spectrum reaches the Earth.
The protective function of the atmosphere does not end here. The atmosphere also protects the earth from the freezing cold of the space, which is about minus 270° C.

Most people looking at the sky do not think about the protective aspect of the atmosphere. They almost never think what kind of a place the world would be like if this structure did not exist. The above photo belongs to a giant crater caused by a meteor that fell in Arizona, in the USA. If the atmosphere did not exist, millions of meteoroids would fall to the Earth and the Earth would become an inhabitable place. Yet, the protective aspect of the atmosphere allows living things to survive in safety. This is certainly God's protection of people, and a miracle proclaimed in the Qur'an.
The energy released in a Sun burst is so powerful that the human mind would hardly comprehend it: A single burst is equivalent to 100 billion atomic bombs similar to the one dropped on Hiroshima. The world is protected from the destructive effects of this energy by the atmosphere and the Van Allen Belts.
As we move from the Earth, which is perfectly fitted for human life, beyond the atmosphere into the space, we come across a freezing cold. The world is protected from the freezing cold of space, which is around -270 degrees, by the help of the atmosphere.
The magnetosphere layer, formed by the magnetic field of the Earth, serves as a shield protecting the earth from celestial bodies, harmful cosmic rays and particles. In the above picture, this magnetosphere layer, which is also named Van Allen Belts, is seen. These belts at thousands of kilometres above the earth protect the living things on the Earth from the fatal energy that would otherwise reach it from space.




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