Astrophysics explains Big Bang and Metric expansion of space in clearer detail (but wiki will do for now!). The concept, anyways, if I understand correctly, is that each particle in the universe is moving away from one another constantly. The phrase ‘moving away from one another’ somehow struck me as something that can be related to our lives too.
When we are infants, we are so close to our parents. So much so that they are our everything. Then there are siblings with whom we start sharing. Right then, our universe has expanded. Couple of years later when we start going to school, we make new relationships. We get to know our teachers, we make friends. Our universe has further expanded. We share secrets with our friends and hence parents have got distanced. When we change schools or when our friends change schools, that’s when our universe expands further. True, we are still friends, but the common ground (school, in this case) is no longer common. We go to college and make more new friends. The ‘school’ friends became a past while the ‘college’ friends became closer. Then we go to work. Our day-to-day interaction with colleagues makes them as our new friends and the ‘college’ friends are now a past. Colleagues quit, people join other companies, more and more new relationships, at the cost of old relationships distancing itself – very much like the Universe and its expansion theory.
What starts as physical distance becomes inherently a cosmic distance too. Well, I guess, nothing can be done about it, and it’s the way of life. The Universe is just mirroring our relationships. However, thanks to the onset of Social Networks, everyone whom we know (or knew in the past) has come a tad mentally closer. Surprisingly, there is a hypothesis about Universe shrinking too – and its called Big Crunch.