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Posted by PeacefulWarrior on Apr-11-2003 22:20:

Parallel Universes

One of the many implications of recent cosmological observations is the concept of parallel universes. Researchers argue that beyond the range of current telescopes are other regions of space that are identical to our universe. Those regions are a type of parallel universe. The assumption is that space appears to be infinite in size. If so, then somewhere out there, everything that is possible becomes real, no matter how improbable it is.

One way to think about this is to imagine a two-dimensional universe with space for only four particles. Such a universe has 2^4, or 16, possible arrangements of matter. If more than 16 of these universes exist, they must begin to repeat. The same argument applies to our universe, which has space for about 10^118 subatomic particle. Therefore, the number of possible arrangements is 2 to the 10^118, or about 10 to the 10^118. The probability of such an arrangement occuring twice is possible if space is infinite.

Posted by Noisician on Apr-11-2003 23:25:

quote:
Originally posted by PeacefulWarrior
One of the many implications of recent cosmological observations is the concept of parallel universes. Researchers argue that beyond the range of current telescopes are other regions of space that are identical to our universe. Those regions are a type of parallel universe. The assumption is that space appears to be infinite in size. If so, then somewhere out there, everything that is possible becomes real, no matter how improbable it is.

One way to think about this is to imagine a two-dimensional universe with space for only four particles. Such a universe has 2^4, or 16, possible arrangements of matter. If more than 16 of these universes exist, they must begin to repeat. The same argument applies to our universe, which has space for about 10^118 subatomic particle. Therefore, the number of possible arrangements is 2 to the 10^118, or about 10 to the 10^118. The probability of such an arrangement occuring twice is possible if space is infinite.

first of all, whether our universe is finite or infinite, scientists still don't know. some of them believe that it is finite because, as they say, space was bent around on itslef due to gravity. second of all, u (or whoever said the above) seem to mix up the terms "parallel universe" and "non-visible universe." beyond the range of our telescopes and visible universe in general (farther than about 13.7 billion light years) is the part of the universe we can't see because light from distant galaxies is redshifted to very long waves, but it is still considered OUR universe! so it follows that, even if parallel universes do exist, we would NEVER be able to locate them within ours. why? because such a universe would represent a different spacetime that would be OUTSIDE of our own. according to general theory of relativity, our universe includes EVERYTHING that emerged from the big bang, which also represents ALL space/galaxies beyond our visible universe. so whatever scientists may find beyound this limit would still be in our universe. no matter how big our universe may become after an eternity, it will never contain objects from a parallel one.

Posted by whiskers on Apr-12-2003 00:19:

Re: Parallel Universes

i wish right now i was in a parallel universe where my team didn't get shafted by our school and where we went down to philadelphia

quote:
Originally posted by PeacefulWarrior
If so, then somewhere out there, everything that is possible becomes real, no matter how improbable it is.

that means there's still small chance that at some point of my life i will have a girlfriend!

Posted by brainfried on Apr-12-2003 15:18:

wow

thats trippy but it makes sense... if only i understood quantum physics and all that other good stuff

Posted by davinox on Apr-12-2003 15:44:

that's only logic

If the universe is infinite, that means there are an infinitie number possibilities occuring.

I do not think the Universe is infinite, but if it truely is, then yes, there is every single possibility occuring. One possibility has even the tiniest atom difference, so yes, if you traveled far enough, you could meet yourself.