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COLLAPSING UNIVERSE?

 
 
Reply Thu 20 Apr, 2006 05:58 am
I read a heard of a theory that the universe is actually shrinking. Immediatly upon hearing this I thought of two things, first of how to reverse such an occurance. Second, would this be considered entropy?
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Type: Discussion • Score: 1 • Views: 666 • Replies: 11
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Wolf ODonnell
 
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Reply Thu 20 Apr, 2006 06:23 am
Re: COLLAPSING UNIVERSE?
harvester wrote:
I read a heard of a theory that the universe is actually shrinking. Immediatly upon hearing this I thought of two things, first of how to reverse such an occurance. Second, would this be considered entropy?


Actually, this theory fits in with the continuous Big Bang model (I made that name up, because I can't remember the real name).

The basic premise is this:

Our Universe was formed from the collapse of a previous old Universe. The matter all collapsed into such the tiny mass that existed before the Big Bang. I can't remember exactly how they stated the Big Bang occurred from there, but the premise is that our collapsed Universe will form the beginnings of a new Universe.

It's an interesting idea, but frankly I don't see much going for it. Well, it would certainly help explain what was before the Big Bang, but it doesn't really seem that much different from the Steady State Theory (which stated that the Universe never had a beginning and will never end).
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DrewDad
 
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Reply Thu 20 Apr, 2006 07:10 am
Current observations show that the universe is "flat."

It will neither expand to infinity, nor collapse back upon itself.
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Chai
 
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Reply Thu 20 Apr, 2006 07:13 am
Re: COLLAPSING UNIVERSE?
harvester wrote:
I read a heard of a theory that the universe is actually shrinking. Immediatly upon hearing this I thought of two things, first of how to reverse such an occurance. Second, would this be considered entropy?


question:

Why are you concerned it's shrinking?
Were you concerned when you believed it was expanding?
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DrewDad
 
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Reply Thu 20 Apr, 2006 07:23 am
All men are concerned about shrinkage, didn't you know?
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Chai
 
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Reply Thu 20 Apr, 2006 07:31 am
Facinating
Logic would indicate this will significantly reduce commute times.

http://upload.wikimedia.org/wikipedia/en/6/6f/Spock001.jpg
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harvester
 
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Reply Thu 20 Apr, 2006 07:34 am
I wouldn't say I was concerned, it just posed the question to me "What if it could be reversed and made to expand?"

Say a star burns for 10 million years, then goes out, explodes, whatever. Then say a star is born every 30 million years. (I don't know the exact numbers but I believe the ratio of a stars death to ones births greatly favors death.) Even if at the present ratio of death:birth, the universe and all in it would eventually die off. 500 billion years is not infinite, and since such a long amount of time would not concern me, as I would not be around, it still poses the question what will happen when this does occur.

That should also answer the second part of your question if I were concerned when it was expanding. Was it ever?
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DrewDad
 
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Reply Thu 20 Apr, 2006 07:37 am
The universe is still in an expansion phase.

If I understand correctly, it will always be expanding. But the expansion is slowing.
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Chai
 
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Reply Thu 20 Apr, 2006 07:40 am
see drew dads's answer.

Also, where are you getting your figures for stars being "born" and stars "dying"?

Not being argumentative...just need a little background.
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harvester
 
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Reply Thu 20 Apr, 2006 07:48 am
I thought of it while reading on this sight. It briefly discusses such a notion. My train of thought wondered further than the author wrote however.

http://abyss.uoregon.edu/~js/ast122/lectures/lec13.html
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Chai
 
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Reply Thu 20 Apr, 2006 07:51 am
there's some people here that know a lot more about this than I....I'll read your link later, and look forward to our resident experts coming forth.

later hon..,..
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astounding
 
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Reply Thu 20 Apr, 2006 02:12 pm
Isaac Asimov actually wrote a book about this. I think its name is "A Collapsing Universe." Printed sometime in the sixties or seventies.
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