Question

If the universe has no center, no edge, and no "outside", how do we get around using these terms? If there are other universes (the multiverse -to be covered in Module 9), how do we describe them in relation to our own universe? Try your best to give coherent explanations to these questions.  

Answer 1

First consider there is no universes at some arbitrary point of time with respect to cosmic clock which has no limit no beginning no end  , not our own which says our time starts around at big bang 14.7 billion years ago according .

Then there exists something called hyperspace according to some theories . In this hyperspace there is always some quantum fluctuation producing positive and equal negative energy simultaneously which keeping total energy zero, if become stable , causes big bang producing a universe like a bubble appearing out of nowhere in water . This bubble starts with almost zero size keep expanding and everything that forms on surface of this bubble so every point on this surface is center of surface with respect to itself or place is center, every galaxy that forms on the surface of bubble goes away from each other like expanding rubber balloon filling with air and every dot represents a galaxy .

Likewise, there are many quantum fluctuation in this hyperspace producing infinite universes like infinite bubbles popping in and out of existence in infinite water reservoir . And this hyperspace , which we even can't begin to comprehend what that could be, must also be keep expanding like individual universe itself keep increasing distances between each universe analogous to our universe's galaxy which are keep receding from each other.  

At last this process of infinite things within infinite things keep going until where human's intellect fails to grasp the enormity of infinite multiverse.