posted on Jun, 15 2004 @ 06:00 AM
I, personally, feel that our universe is finite. I feel that it is a 4 dimensional object which exists within at least a 5 dimensional space.
Humans, in our limited 4th dimensional existence, will naturally have trouble understanding this 5th dimensional space. I believe that outside of
this 4 dimensional space, that there is a 5th dimension (i.e., the "superspace" that some have referred to). What is this 5th dimension? I have no
idea, but it is unlimited in terms of the 4 known dimensions. Is it truly unlimited? Maybe, maybe not. It's hard to say with a 4 dimensional
mindset.
What is at the edge of our 4 dimensions? I would guess a very real barrier, the likes of which mankind has never witnessed. Probably a weird
perversion of time and space as we know it.
I think the end of time can be reduced to a combination of two ideas. Thermodynamics will reach equilibrium, which will end the vast majority (if not
all) of our known energy sources, and gravity will pull us all back to where it (roughly) all began.
The end of space, for me, is a little more difficult than that. Since it's commonly accepted that it's impossible to truly exceed the speed of
light in a 4 dimensional model, and light has a LOOOOONG head start on us, we won't ever make it to the edge of our space without entering this
theoretical 5th dimensional space. If we tried to approach this border as it was receding (near the end of time, after the universe begins
crunching), we'd probably meet with something bordering on infinite gravity pushing us away from the border, and tons of matter resisting our
approach as it is all pulled back to the center.
Think of it as being cosmically carried on the waves of the ocean, without significant internal propulsion of your own. The water represents our
universe, the earth represents a 5th dimension. The water washes upon the earth and recedes, even though there is a tangible edge to the water, you
could never escape it on your own, or only using water based propulsion methods, unless you could exceed the speed of the water's flow.
What would you reach if you could escape the tide? The earth, of course; the substance on which the water ebbs and flows. In the astrophysical
model, the earth represents the 5th dimension, the properties of which I have no idea. I would say there's an additional media that we exist on, and
an additional power source driving our universe, tho.
So, I would say, the "wall" on the edge of our universe is a 5th dimensional border.
This probably raises more questions than it answers, but that's my idea of the known universe.
--Just1Man
**edit: guh. proofreading. . .**
[edit on 15-6-2004 by Just1Man]