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Author | Topic: Structure and shape of the Universe | |||||||||||||||||||||||||
btseshasayee Inactive Member |
If BIG-BANG theory is correct, then the shape of the expanding universe must be a hollow sphere with all the matter concentrated on the outer shell.But how come the structure of the universe is believed to be spacially homogeneous?
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AdminNosy Administrator Posts: 4754 From: Vancouver, BC, Canada Joined: |
You will learn a bit from asking this question but perhaps your opening post needs a bit more in it to get it started.
For one thing, many here would be interested in where you got your ideas about what the big bang actually is and what it predicts about what the universe would be like. It would be useful to supply your source for thie "information". If it is your own idea then perhaps you could explain a bit about what you think the "BIG-BANG theory" says and how you arrive at your conclusion from that. Since your errors lie in the basic understanding of the concepts it would help people straighten you out if you clearly state what you think it is all about.
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btseshasayee Inactive Member |
The concepts of Big - Bang and expanding universe are too wellknown. I do not understand why you are doubting my basic understanding of these concepts. Please quote the errors you indentified from my post.
The shape of the universe I mentioned is my own idea steming out of the simple extrapolation of Big-Bang. All the administrators and members are most welcome to straighten me out.
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AdminNosy Administrator Posts: 4754 From: Vancouver, BC, Canada Joined: |
Since you are determined to go ahead with this. I will let it go.
You have no right to now complain about piling on. If you venture into areas which you do not know anything about then good luck. It is not appropriate for admins to comment on the strength of your argument in any detail here. We will leave that to the full community.
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AdminNosy Administrator Posts: 4754 From: Vancouver, BC, Canada Joined: |
Thread moved here from the Proposed New Topics forum.
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Eta_Carinae Member (Idle past 4375 days) Posts: 547 From: US Joined: |
In fact what you are saying makes no sense.
Explain it more thoroughly.
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JonF Member (Idle past 168 days) Posts: 6174 Joined: |
The Big Bang was not an explosion. It was an expansion, and the expansion was an expansion of space itself, not the things within space. The Big Bang theory predicts that matter should be more or less evenly distributed through space (which appears to be roughly true on gigantic scales). It does not predict that "the shape of the expanding universe must be a hollow sphere with all the matter concentrated on the outer shell". That is merely your misunderstanding of the theory.
See When the Big Bang exploded, why wasn't a large empty region created?, Big Bang, and Misconceptions about the Big Bang.
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btseshasayee Inactive Member |
Dear John,
Thankyou very much for understanding and clearing my misunderstanding.
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btseshasayee Inactive Member |
Dear John,
Thank you very much for understanding (and clearing) my misunderstanding.
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btseshasayee Inactive Member |
Dear Eta_carinae,
Thanks for responding.My misunderstanding is cleared by Mr John.
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Jydee Inactive Member |
Please read the this description of our present ideas about the "Big Bang" and the expanding universe
http://www.pbs.org/wnet/hawking/html/ask.html Than visit all the pages of Stephen Hawkin's Universe at http://www.pbs.org/wnet/hawking/html/home.html Than direct your searce engine to Brane theory and read everything you can about the brane theory. Only than will we have a reasonable ( only reasonable) foundation on which to conduct this debate. The ancient Greeks discovered the the round earth. Do you know and understand more about the universe , or did we only expand the size of their cosmos. It seems to me we are only increasing the mysteries and moving the sigh post indicating the borders of the cosmos for ever futher away. Jydee
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Jydee Inactive Member |
Correction . The sentence referring to the ancent Greeks the "you"
should be replaced by they
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Jydee Inactive Member |
The last sentence of my posting should read :
The ancient Greeks discovered the the round earth. Do we know and understand the universe better than they did or did we only move the sign posts indicating the borders of the universe? Are we not forever moving these sign post futher and futher away? Are we in the process also not creating more mysteries than solving mysteries? Jydee
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contracycle Inactive Member |
quote: I know its a radical idea, but we can just actually answer the question, you know.
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contracycle Inactive Member |
quote: There is a particular model that often seems to produce this misunderstanding. In a different discussion about the expansion of the universe subsequent to the big bang, a simile is often given with points on an expanding balloon. Taken literally, this is often seen as suggesting that our universe is the rubber of the balloon, and that hence the universe is hollow. But that is a weakness of the simile, rather than what it is actually trying to communicate.
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