Explore universe

  HEY THERE !! This blog is the continuation of the previous one which I ended up with suspense of 'why does the disorder increase in the same direction of time as that in which the universe expands?' So, let's scratch it up to find the answer. But to understand the solution to this query, you need to visit the previous blog. Before reading further, you must  know the meaning of the following: NO BOUNDARY PROPOSAL - In the 1980s, Stephen Hawking and James Hartle put this proposal, which states that the universe has no initial-boundary conditions on either time or space. Or it simply states that asking what came before the big bang is meaningless like asking what is south of the south pole because there is no notion of time available to refer to. The concept of time only exists within our universe. WEAK ANTHROPIC PRINCIPLE - It is the truism that the universe must be found to possess those properties that are necessary for the existence of observers...

 Up to the beginning of this century, people believed in an absolute time. That is, each event could be described by a number called 'time' in a unique way, and all the good clocks would agree on the time interval between two events. However, the discovery that the s[peed of light appeared the same to every observer, no matter how he was moving, led to the theory of relativity - and in that one had to abandon the idea that there was a unique absolute time. Instead, each observer would see his own measure of time as recorded by a clock that he carried. Thus time became a more personal concept, relative to the observer who measured it. When one tried to unify gravity with quantum mechanics, one had to introduce the idea of  'imaginary' time. Imaginary time is indistinguishable from directions in space. If one can go north, one can turn around and head south; equally, if one can go forward in imaginary time, one ought to be able to turn round and go backward. This means th...