About 13.5 billion years ago, matter, energy, time and space came into being. The Big Bang Theory is the prevailing cosmological model explaining the existence of the observable universe from the earliest known periods through its subsequent large-scale evolution. It further states that over time, the universe began to cool down sufficiently to allow the formation of stars and galaxies.
The astronomers later found evidence of “receding” galaxies, that is galaxies moving away from each other. Not only that, the further away the galaxies are, the more quickly they are receding.
The human condition is characterised by a similar receding phenomenon. Most common is physical recession. The members of a joint family set up their own establishments. The children move away from their parents to college or, later, to take up jobs. Similarly, during childhood, the children form groups — play groups, study groups or whatever — in their residential colonies and schools. These also break up as they move on in life.