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x We can only "see" about 14 billion light-years in every direction from the Earth to the cosmic light horizon (or in other words, anything that might exist beyond this horizon we can't see because the light from it hasn't reached us yet)
That's interesting noktourn. To add some for you:
Light is an electromagnetic wave. Being an electromagnetic wave it travels at 3 x 10^8 m/s in vaccum. Therefore there are measurable limits to speeds in set conditions. Unlike sound waves, light travels slower in dense material. Accordingly the fastest known speed is the speed of light - but more interesting thatn that is the fact that if you travel at 1% speed of light or 99% speed of light the speed of a travelling beam of light you observe (say from a light bulb) will still appear the same speed to you.
What this lends to me - at least based upon current knowledge! - is that there are measurable limits to the universe.
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x In the Big Bang theory, there was no "before the universe," because time didn't exist - nothing existed except for something called a cosmic singularity.
Time and the cosmic singularity - its impressive you're learning this at 17. The question is what did exist before? And does you idea of time suggest that:
time (1) = before
time (2) = now
time (3) = after
that "=" sign is the key factor here. Think it some. Could the universe be ALWAYS expanding and retracting into one signularity? Is this an ordered expanison and retraction and thus are we constantly repeating history (and/or is the future constantly determiningthe past?) or is this universe here now unique?
In terms of my initial post I think that because we can observe order in our universe then this serves us best. We have had our good deal of disorder with witchcraft etc., but this hasn't stood the test of time!