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Parallel universes are becoming a pretty rational science these days. A few years ago any scientist that put forward the theory that we were just one of a million possible universes which already exist just a tiny amount of atoms away from us would be laughed off the planet, or at least this reality. Now this seems to be just another scientific fact in the increasingly varied new forms of science that have made their place in today’s world.
Parallel universes certainly explain many things quite neatly. Alien civilisations and spacecraft sightings could simply be from a parallel earth where technology and evolution has taken a different and more advanced route, the world’s monsters such as the famous Loch Ness monster and the Jersey Devil could simply be either Dinosaurs that have somehow found their way into our reality from somewhere where they never died out, or perhaps a different form of evolution.
Likewise, ghostly images seen by so many people could be simply people trapped, not in the afterlife, but between worlds. The exorcist could simply calm them enough to send them back through to their universe or have some sort of unknown influence over the universe’s structure.
Parallel universes may well have a different gravitational structure, they may have different scientific rules altogether. There may indeed be malevolent forces at work in other universes which have found their way to ours, which would explain so called government agents which don’t exist and the infamous Men In Black that are notorious for turning up after UFO sightings and strange phenomena (more on those in another post). The possibilities are endless.
So, with these different universes around, what can we expect to happen? Well, as a whole it won’t really affect us unless those self same scientists that discovered this anomaly decide to play God and create their own new universe (possibly happening right now). If this whole theory (and it is now so much more than a mathematical certainty) is opened up to the world then we may well find that these universes can be traversed, which could lead to many exciting and dangerous possibilities.
Let’s just hope that science is working in our best interests. After all, humans are the most advanced and civilised creatures in the universe….aren’t they?!
> imagine if a 2 dimensional world was created though!!! That is just as hard to
> grasp as a four Dimensional world!!! How can you exist in ponly two dimensions?
> You'd look like a Mario brother! And you could only see in two dimensions, so
> straight forward, and up/down, so your vision would be a tiny (1 atom thin
> probably) line of visibility, making everything too small to see.
Well, there are probably some 4 dimensional people saying the exact same thing about 3 dimensional people. We just don't know how limited our vision is- to only one 3d plane!
Sonic
In short, this was a parallel universe that exists now and in almost the same space as our own universe, both physical and both there at the same time in the same 'space' (as we know space to be) The reason we do not see it is because we only think and act in the 3 physical dimensions, with time as a fourth dimension determining what we see as our existence.
This must be somewhere on the internet, I'm sure. I'll see what else I can dig up, but yes, it does relate to Quantum theory and superstring theory to some extent.
hmm... this is hurting my brain. But I saw that program on the BBC a while ago and made a topic 'How the Universe REALLY started' explaining (very) basically what was said in that program, and about them not being able to decidde if there were 11 or 10 dimensions, and the string and wave theory, and stuff like that...
The idea is that the universe began as a 24 dimensional universe consisting of strings- tubes that are very small and 24 dimensional.
However, this universe was not stable, so split into two. One of these just shrivelled up, and the second, 4 dimensional universe is where we are now. HOWEVER, the 4th dimension in thise sense is a SPACIAL dimension- not time. Confused- read "Hyperspace" by somebody Kaku.
Anyway, where is the 4th spacial dimension? Well, it's shrivelled up to a size smalled than an atom. The only way to see it would be to channel Plank's energy constant... which would mean tapping the power of millions of stars! So it ain't happening.
There are some worrying consequences to this theory. Here is one example:
What if our Universe, like the original one, is not stable? Then, at some time a buble would open in space that would grow outwards at the speed of light. In the bubble a new dimensional spae would be made- maybe 2 dimensional say. Matter would be destroyed an remade. We would never see the bubble coming, and we'd all die. Great!
sonic
There are eleven dimensions, according to the inflationary big bang theory (as opposed to the standard big bang theory), if I remember correctly.
These dimensions are something in the order of 10^-30 m across. We can't see, used, or imagine them because we are far too buig. Some subatomic particles however, can. This is the occurence pb mentioned that scentists have discovered.
As for the 'Why is our universe in existence with our particular universal constants' question, one explanation is that there is a permenant cycle going on, whereby our universe has a big bang, then a big crunch, and then some wuantum fluctuataions create an entirely new universe. This continues indefinitely. The reason this universe exists the way it does, is by pure chance. All the others failed after some period of time (assuming time has any meaning in thie context...), and now ours exists.
In fact, this problem was solved
> with Schrodinger's Wave equation (yep... same Schrodinger!). Basically it showed
> that out of all the possible universes, ours was the most likely to occur, and
> hence we are here. But this raises the question: why is ours the most likely to
> occur.... to which no one has an answer!
Too true ! What about those event that happen that aren't really likely to occur ? All through history there have been major points where something unbelievable happens, or something that wasnt likley to occur did.
I suppose that it could be argued that our universe is the most likley to occur because, by and large, the human race carries on in relative harmony.....okay its not a perfect world but on the whole it could be a lot worse.
Schrodinger's idea is based on Quantum uncertainty. Let me explain this in a story called "Schrodinger's Cat":
I put a cat in a sealed box with some poison, and close the box. Now, one of 2 things happens. Either the cat enters a state of flux, being both dead and alive at once- when you open the box the cat enters on of those states. OR the universe splits, and you don't know whether you're in the universe where the cat is dead or alive until you check. This is Quantum Uncertainty. Of course, the cat is actually a subatomic particle, and it being "dead or alive" actually corresponds to things like the spin of the particle, or it's exact location at any one time.
As a result everything that can happen does... in different dimension.
Now, the other parrallel universe idea...
Basically, Phsicists asked themselves: why should it be that the Universe is EXACTLY like it is? Why isn't gravity a bit stronger, meaning atoms couldn't exist, or that atoms didn't exist at all. Why should there be this thing called "force". So, they came up with this answer: Every possible universe does.
Now this actual complicates the question- after all, why SHOULD every possible universe exist? Unlike Schrodinger's cat model, here we have every possible type of forces... in the cat model we just had one set of forces that was the ones we experience- just that the possition and state of atoms and particles changes in each one.
In fact, this problem was solved with Schrodinger's Wave equation (yep... same Schrodinger!). Basically it showed that out of all the possible universes, ours was the most likely to occur, and hence we are here. But this raises the question: why is ours the most likely to occur.... to which no one has an answer!
sonic