Saturday, May 13, 2017

Some thoughts on our Universe, time, space, length, Big Bang, God, etc.

  • I don't think it's either correct or complete to talk about the origin of only our "present" Universe [the post-Big Bang Universe that we live in and observe]. I strongly feel that we can't correctly understand this "current" Universe without simultaneously asking what existed before Big Bang [and also why].
  • Is space infinite in the real sense? It seems so. After all, there isn't going to be a wall to mark the end of space. Even if there was a wall, there would be something beyond it. But trying to imagine a "really" infinite space gives me a sort of headache. So much space? How can there be so much space? Is the word "so much" even correct? Because no matter how much space I talk about, it's surely 0.0000001% of some other, larger volume of space [which would itself be a minor fraction of an even larger volume, and so on]. Easy to get headache imagining this.
  • I do get this one thing quite clearly. The Universe cannot be finite. It has to be infinite [saying this without defining what is meant by being infinite], because if it's finite and measurable, then there must be something beyond this demarcated box.
  • However, it isn't necessary that being infinite must/should mean that if we keep going in one direction in the space, we must be able to continue endlessly. The latter is maybe possible but it shouldn't be essential. Why? Because it's possible that the shape/structure of space is such that if you start in one direction and keep going, then you eventually return to the same spot, much like revolving around a circle. But if this were possible, wouldn't it make space finite? Because we would be able to measure the total distance traveled? Seems wrong. Unclear.
    • Is it possible that this issue gets resolved if it turns out that when we start in one direction and ultimately end up at the place of origin [or "space" of origin], the distance travelled comes out to be what's known as "infinite"?
      • Or is it the case that once we leave the place/space of origin, we can never return to it?
  • Why is there anything at all, we must also ask? Why is there nothing/nothingness. No Universe, no us and no space. Now, as much headache the thought of really infinite, endless space gives, that much headache the thought of nothingness also gives. Now that we are here and we can think and observe, it becomes impossible to imagine this absolute nothingness. It seems like there has to be something [at least empty space].
  • And here's the trillion dollar/euro/pound/rouble/yen/yuan/rupee question. Why doesn't anyone talk about the trillions, or trillions of trillions of years before the relatively paltry 13.8 billion years that has been calculated as the age of our Universe? Why do scientists call Big Bang the beginning of time? Was there nothing, say, 500 trillion years ago? Or is it correct to say that time indeed resets every once in a while, and that it's correct to say that time indeed reset to zero - again - about 13.8 billions years ago? Such resets must've happened infinite number of times previously too [not any finite number of times, but infinite]. No scientist seems interested in tackling this question. What about a trillion quadrillion years ago? Something must have existed even back then, unless the very nature of time needs alteration. So like the space is endless, time too is endless backward [as well as forward]. You can keep thinking back and whatever largest number of years you come up with is but a tiny fraction of an even larger number of years, and so on endlessly. Another headache.
    • Now this point appears related to the first bullet point.
  • God?

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