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Old 07-11-2011, 05:39 PM   #1
DudeNtheRoom
 
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Do you believe that space is finite or infinite?

I was watching a TV show about this while I was eating. i always thought it was believed that space was infinite. Seems there are some scientists that believe is it circular like a ball or something and when you go out one end you come in the exact opposite side.

Theres a plasma layer out there all around us waaaaaaay out in space. So even if we built a telescope capable of looking past it we wouldn't be able to.

This leaves us to wonder if space is in fact 1 of the 2.

I'm going to stay old school on this one and say it's infinite.
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Old 07-11-2011, 05:43 PM   #2
Lozer
 
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I believe it's finite but ever-expanding!

However, sizing the universe is beyond our comprehension or measurements, so it may look infinite to us mortals.
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Old 07-11-2011, 05:48 PM   #3
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Originally Posted by Lozer View Post
I believe it's finite but ever-expanding!

However, sizing the universe is beyond our comprehension or measurements, so it may look infinite to us mortals.
I think it's finite. We'll never reach the end though. Plus it's theorized that there are 8 or so dimensions, so we are a spec in the grand scheme of things.
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Old 07-11-2011, 05:49 PM   #4
sad_ism
 
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Now that the US has cancelled its space shuttle program, you may never know! :troll:
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Old 07-11-2011, 05:52 PM   #5
cegrogan
 
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Several laws of physics would be utterly broken if space was infinite. Especially the idea of continual entropy, since infinite space would indicate infinite mass, which correlates to infinite energy.
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Old 07-11-2011, 05:58 PM   #6
DarthSatoris
 
 
 
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There's a theory going around called "heat death" or "big freeze", where scientists speculate the ultimate fate of the universe to go to a complete standstill (freeze over) as the universe continues to expand, by using the laws of thermodynamics.

If anyone here knows about thermodynamic powers, the universe is a closed system, and as space expands, the distribution of the only heat we have gets thinner and thinner until it's so thin that the limit is reached and thus everything freezes over as there's no more heat.

This of course takes several hundred billions of years so it won't happen in your time.

Last edited by DarthSatoris: 07-11-2011 at 06:03 PM.
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Old 07-11-2011, 06:00 PM   #7
cegrogan
 
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Originally Posted by DarthSatoris View Post
There's a theory going around called "heat death" or "big freeze", where scientists speculate the ultimate fate of the universe to go to a complete standstill as the universe continues to expand, by using the laws of thermodynamics.
Entropy is a
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Old 07-11-2011, 06:02 PM   #8
Snorkel
 
 
 
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Yes, I believe that space is finite or infinite.
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Old 07-11-2011, 06:02 PM   #9
frogsmoothy
 
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Entropy is a
Well played. I'll bring that up in my next physics class.

I think logically, it should be infinite. But it's probably finite.
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Old 07-11-2011, 06:03 PM   #10
AsheMan
 
 
 
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Maybe it's infinite, but somehow comes in on itself as a cycle (expand/contrast, layers of dimensions, wormhole/circular) as an infinite process.
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Old 07-11-2011, 06:04 PM   #11
cegrogan
 
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Originally Posted by frogsmoothy View Post
Well played. I'll bring that up in my next physics class.

I think logically, it should be infinite. But it's probably finite.
Thing is, heat death or the big freeze wouldn't be a very logical assumption if energy was infinite
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Old 07-11-2011, 06:05 PM   #12
damaged
 
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Originally Posted by cegrogan View Post
Entropy is a
http://www.youtube.com/watch?v=5bueZoYhUlg
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Old 07-11-2011, 06:07 PM   #13
DarthSatoris
 
 
 
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To bring up my own theory.

Bubble Multiverse.

Our universe is a bubble among countless other bubbles, and there is a definite wall when you reach it. you can't see past it, you can't determine its substance; it's literally the end of the world.

The other bubbles are similar universes to ours, and they are under the same laws of physics as us. But only 10^500 of them. The rest have completely different laws of physics.
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Old 07-11-2011, 06:10 PM   #14
FreemanForPrez
 
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Are we talking space or the universe?

In the case of the universe, if the Big Bang is correct, it would have to be finite, although expanding, as someone else pointed out.

If we're talking space (not space-time), as in the absence of everything, I would have to guess space is infinite.

But although I can easily picture a finite but ever-expanding universe, I find it impossible to picture infinite empty space.

And there's also this problem - what are we left with after all the last particles in our universe have poofed out of existence?
Does space still exist? I'd say yes. Does space-time still exist? hmmm....
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Old 07-11-2011, 06:12 PM   #15
bluz74
 
 
 
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Thinking about space hurts my tiny brain. That's why I hang out at the space bar looking for Esc.
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