Abstract
There are several unknowns like the nature of primordial matter, dark and visible matter. Besides, one has no idea what existed prior to the Big bang if there was one. How the Unified Potential field manifested into its four components, gravitational, strong nuclear, weak nuclear cum electromagnetic ones. Have their relative strengths remained as ever from the start, etc. As cosmological data is neither precise nor certain about the period covered since the birth of the Universe, it is not certain whether the physical constants have varied and by what degree? One can comprehend and speculate about the possibilities keeping the observations as guidelines. Such an attempt will be presented
Narendra Nath