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Originally posted by SPACEYstranger
so, say, if you were to keep moving directly away from earth you might eventually come back to it? seems like if you had a point of reference (the earth) to move away from that this would be impossible. Not saying that space doesnt have a curve, but the paradox lies in that if you can see earth behind you, can it also be in front of you?
what if the scientists at the LHC trying to recreate the big bang actually are the actual cause of the big bang that created the universe, i know it sounds nuts lol. it's kinda like an infinite loop first came the big bang, universe created, life starts on earth, we evolve to the point that we try and re-create the big bang and boom BIG BANG we start over again lol.
Originally posted by Ian McLean
Assumes a certain closed topology of the universe.
Here's an interesting thing to think about, along the same lines: the Principle of Least Time.
Light doesn't take the shortest path. It takes the fastest path.
So perhaps in your analogy the farthest point is the one that is slowest to get to?
Originally posted by acrux
...my take is you see the back. Like with the earth, walk right around & come back to the origin, so as to see it in front of you, technically would be what is behind you is also in front of you, but just at a longer distance way.
Originally posted by Devino
Do not forget about the motion of time here, the concept of "lookback time" is flawed in this respect. You can never look back to a time where you used to physically be any more than you could go back and meet yourself in the past.
Originally posted by IllMannered
It almost seems plausible to me that if I were standing in my front yard and ran fast enough in a straight line/curve that I would be able to touch the back of my own head before I left. It's a cool thought. Even faster and maybe I could pass myself before I left.
Originally posted by endisnighe
The shortest or longest path is a straight line is what you are saying. But, you are thinking as in a spherical path when you are using the earth as an analogy. Of course this is what you mean when you are talking in reference to the universe also. That if you follow a straight line it will in actuality be spherical. So you are saying in regards to Einstein's theory of space time that the straight line is following the curvature of space/time.
The best analogy I can come up with is instead of being on the surface of the waterbed, we are inside the waterbed and the water being the third component.