Quote:
Originally Posted by tatwood106
Ok, here is the definition of infinite I mean. I am located on earth, I leave earth and travel in any direction in the universe and I am traveling far faster than the universe is expanding. No matter how fast I travel or how far I would never reach an edge or boundary of the universe; I would keep traveling forever there would be no end to the universe, it would be infinite. I would however still be in space and there would still be time.
Now if the universe if finite and I make the same trip I would eventually reach the edge of the universe's expansion. If I keep traveling out past that boundary, what would I pass into? Or without the construct of space/time is there no way either physically or mathematically to predict what I would encounter?
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I tried to communicate that you idea of what the universe is like is based on your senses. This is the trouble.
I am gathering You expect that the universe is like a sphere, because you are using your world view acquired by your senses..
How do you know you are not on the edge of the universe already?
Do you think you are at the center?
Where is your location?
Accroding to scientific theory, special relativity would describe that if you were to travel in a real ship, trying to "reach the edge of the universe", as you speed up more and more and more getting ever closer to the speed of light, the universe would become shorter and shorter in the direction that you are traveling. So as you travel, very fast it would take barely any time relative to your observation to travel this earlier percieved vast distance.
Muon Experiment: Relativistic, Muon-Frame Observer
However, what you see before you start your journey is a very very old representation, and it is not what you are going to observe when you reach those destinations.
I actually need to brush up on all of this myself...
I don't expect you would ever reach any sort of end to a universe, in the sense that stars and suddenly started dissapearing and you headed off into the void.
I really dont expect that nature works like we imagine it 3 dimensionally.
