End of life (Death) of any living material in this mortal world is inevitable but without much of concern towards it except in case of human. Man from time immortals is trying to understand this moment and to control it but without much success. Scientists are trying very hard in order to enhance the life expectancy and are happy to boost about the role of scientific base in this direction.  However, not going into the consequences of endless human population on the earth, though, to stop the end of a life is still far away from science knowledge. Death has been spiritually defined in almost all religious 

beliefs in its own way but accept the truth that it is inevitable and also must in order to maintain a life system on the earth.   Great scientists like Heisenberg, Schrodinger, Niels Bohr, Nikola Tesla, Einstein and many others have finally turned to the spiritual path in order to understand the science of birth, life and its end.

It is a very famous Indian mythology scripture from Yaksha Prashna also known as the Dharma Baka Upakhyan or the Ashkardhama, the story of a riddle contest between Yudhishthira and a Yaksha in the Hindu epic Mahabharata in which various questions were asked by the Yaksha (who himself was Yama-Dharma, the god of death, who was none other than Yudhishthira's father). The Yaksha asked eighteen questions with philosophical and metaphysical ramifications. One of the questions Yaksha asked from Yudhistra was that “What is the greatest wonder?” Yudhistra replied that day after day countless people die, yet the living wish to live forever. O Lord, what can be a greater wonder? All our GODs in Indian mythology bless their true worshipers to fulfill their various and unimaginable demands but no one so far has given the blessing to be immortal. Not even incarnations of GODs and great worshipers of GOD were exempted from the end (Death) of life on this mortal world. 

Though, the death time for every one coming to this mortal world is already decided but even then end of life is generally supposed to follow a age sequence i.e., older has to go first which is called as a timely death.  In earlier three Yugas (Satyuga, Treta and Daupra) except to very rare violations this age rule might have been followed in true sense. As in Indian mythology, the death (end of life) in violation to this age rule is termed as untimely death and said that the departed souls never rest in peace or take re-birth and said to be roaming in the space unless they are freed from this state by some rituals.

In the present era of social life cycle (called Kaliyuga), the phenomena of untimely deaths has become so common. All around us, everyday, we are reading or listening about the deaths of very young children.  Death always comes with a cause and no doubt death can come to young ones also. There are many causes like diseases and accidents and many of them are coming solely due to carelessness of people around us like a driver driving the bus through a railway crossing. Recently, a large number of very young students, at the age group of 2-14 years, have lost their lives only due to carelessness of others.  This was not the time for their departure from this world. Such incidents only reflect the untimely ends to lives.  Science never comes in direct conflict with the death, its cause and time as science does not believe in destiny and re-birth and thus cannot explain death. Science looks on the life and body in terms of a machine which has ultimately come to an end when its physical health deteriorates. However, spirituality from any religion, gives a nice explanation and morale to bear the loss of young ones may be due to any reason. 

As so many people have stated, science does not (at this point) recognize the existence of “the soul” and so there would be no theories about it at all. However, that has happened with a multitude of things: gravity, cells, molecules, atoms, subatomic particles, radiation, black holes, quasars, etc., things which science later “proved,” i.e. came up with theories about to explain observable data. In fact, in some cases, there was a belief in something, for instance, aether/ether/quintessece, then it was “disproved” with the argument that there was no need for the theory because everything it explained could be explained by better theories. Yet much later, they found they could not explain new things they discovered and basically reinvented it with the name “dark energy.”