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I've always wondered, does the universe go on forever and ever, or is a definite space with borderlines? And if there are borderlines, what is on the other side of the borderlines? I mean, I'm sitting on a chair. That chair posseses a space, and there is air beyond the boundaries of that space. Shouldn't this work for all objects in the universe, or the universe itself?

I haven't done any deep, profound or theoretical phsyics classes yet, but I just want to know.

2007-06-24 11:05:26 · 7 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

7 answers

The universe is bounded, but its size is increasing (at the moment).

Article:
http://en.wikipedia.org/wiki/Universe

Picture:
http://en.wikipedia.org/wiki/Image:WMAP_white.jpg

2007-06-24 11:10:36 · answer #1 · answered by сhееsеr1 7 · 0 1

The Universe that we know has boundaries as far as we can tell. However we don't know if there are more Universes out there...

Since space and time are so closely linked I think it's a lot like time. It depends on your perspective. If you lived forever time wouldn't exist. However if you live 100 years, 1 hour will seem like nothing. If you can only see 53004324 million light years away, then that's going to be the end.

2007-06-24 18:13:59 · answer #2 · answered by Greg 3 · 1 2

Read Stephen Hawking's book, "A Brief History of Time". There is controversy over the question. I personally believe in the theory of multiple Universes. Perhaps even an infinite number of them.

2007-06-24 18:15:06 · answer #3 · answered by Spade, Sam Spade 6 · 0 1

It is generally considered to have finite volume with no boundary. How is that possible you ask? In an analogous way to how the Earth can have a surface area with a limited number of square miles but no edge. In that case, the 2 dimensional surface of Earth is limited because it is curved in the 3rd dimension. In an analogous way, 3 dimensional space has a limited number of cubic miles in it, but has no edge because it is curved in a higher dimension. Maybe the 4th dimension, but I think it isn't really that simple. The difference is the we are 3 dimensional creatures and can see that the 2 dimensional surface of the Earth is not all there is. But we are not 4 dimensional creatures and cannot see that the 3 dimensional volume we call space is not all there is.

2007-06-24 18:20:19 · answer #4 · answered by campbelp2002 7 · 0 2

The universe currently does have and "end" where the big bang is still "exploding" into nothingness. So, the outer layer of the universe, where the big bang is, is the "end" of the universe. So, as our universe is expanding what is it expanding into? Whats on the other side of its border? Well, nothingness. nothingness is an infinite vacuum where tiny particles (i forgot the names of them) zoom in and out of existance, creating a vacuum. Also, other universes also expanding into the current nothingness are out there. Many universes are also just forming or condensing back into the tiny condensed particle (big bang) just to explode again. If you want more info, do some research. Its the best way to find out about this stuff.

2007-06-24 20:48:08 · answer #5 · answered by Horcrux 3 · 0 2

The effect of the big bang will go on for ever until something stops it (Newton's theory). The universe has no intended boundary.

2007-06-24 18:44:16 · answer #6 · answered by my blog 2 · 0 2

The universe is just a figment of its' own imagination...

2007-06-24 18:12:39 · answer #7 · answered by nikkoj1975 4 · 0 2

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