ভূমিকা
Shiavault - a Vault of Shia Islamic Books The New Scientific Case For God The Dark Night Sky Paradox If the universe is infinite in spatial extent then light from infinite number of stars would always be pouring down on the earth from the skies. A simple mathematical calculation would show that the sky would never be dark under such circumstances. The paradox can ONLY be solved if we assume a finite age of the universe (a beginning).
In such a case which corresponds to reality, we are only able to see the light which has had time to travel across space to earth since the beginning of the particular star from which it comes (Davies :46). GOD NEEDED FOR THE BIG BANG: The Flatness Problem in Cosmology: The actual density of the universe is average amount of matter or mass-energy per unit of space. If the actual density of the universe is greater than a particular critical density then the universe will eventually stop expanding.
Since after more than 10 billion years of expanding, the universes actual density is pretty close to its critical density, scientists conclude that at the time of the big bang, these two figures must have been very close to each other. They do not know why this was so. If it had not been so, and the actual density differed from the critical by even a tiny amount, either way, our universe would have ceased to exist after only a few million years.. This is termed as the flatness problem.
They do not know why both the figures were where they were supposed to be to make our universe still exist after 10 billion years. The Koran talked about the "expanding universe" as well, fourteen centuries before scientists discovered it: " And the sky, we built it with might and We cause the expansion of it." Koran 51:47 If the universe had been expanding too rapidly, the clouds that formed the galaxies would have been spread thin and pulled apart before gravity could dominate...
On the other hand if the universe had started out expanding too slowly, it would have come to a halt and started to re-collapse with galaxies falling towards each other (Gribbins, Rees: 17) If we push back to the earliest time at which our theories of physics can be thought to have any validity, the implication is that the "density-parameter" was set in the beginning, with an accuracy of 1 part in 1060 (10 followed by 60 zeroes).