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Author Topic:   Structure and shape of the Universe
btseshasayee
Inactive Member


Message 1 of 22 (192110)
03-17-2005 10:05 AM


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?

Replies to this message:
 Message 2 by AdminNosy, posted 03-17-2005 10:22 AM btseshasayee has replied
 Message 6 by Eta_Carinae, posted 03-19-2005 10:31 PM btseshasayee has replied
 Message 7 by JonF, posted 03-20-2005 10:03 AM btseshasayee has replied
 Message 15 by contracycle, posted 03-24-2005 6:31 AM btseshasayee has not replied

  
AdminNosy
Administrator
Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


Message 2 of 22 (192113)
03-17-2005 10:22 AM
Reply to: Message 1 by btseshasayee
03-17-2005 10:05 AM


Perhaps a bit more meat?
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.

This message is a reply to:
 Message 1 by btseshasayee, posted 03-17-2005 10:05 AM btseshasayee has replied

Replies to this message:
 Message 3 by btseshasayee, posted 03-19-2005 10:18 PM AdminNosy has replied

  
btseshasayee
Inactive Member


Message 3 of 22 (192665)
03-19-2005 10:18 PM
Reply to: Message 2 by AdminNosy
03-17-2005 10:22 AM


Re: Perhaps a bit more meat?
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.

This message is a reply to:
 Message 2 by AdminNosy, posted 03-17-2005 10:22 AM AdminNosy has replied

Replies to this message:
 Message 4 by AdminNosy, posted 03-19-2005 10:22 PM btseshasayee has not replied

  
AdminNosy
Administrator
Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


Message 4 of 22 (192667)
03-19-2005 10:22 PM
Reply to: Message 3 by btseshasayee
03-19-2005 10:18 PM


Ok then...
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.

This message is a reply to:
 Message 3 by btseshasayee, posted 03-19-2005 10:18 PM btseshasayee has not replied

  
AdminNosy
Administrator
Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


Message 5 of 22 (192668)
03-19-2005 10:23 PM


Thread moved here from the Proposed New Topics forum.

  
Eta_Carinae
Member (Idle past 4375 days)
Posts: 547
From: US
Joined: 11-15-2003


Message 6 of 22 (192678)
03-19-2005 10:31 PM
Reply to: Message 1 by btseshasayee
03-17-2005 10:05 AM


Why use the word 'must'.
In fact what you are saying makes no sense.
Explain it more thoroughly.

This message is a reply to:
 Message 1 by btseshasayee, posted 03-17-2005 10:05 AM btseshasayee has replied

Replies to this message:
 Message 10 by btseshasayee, posted 03-20-2005 8:23 PM Eta_Carinae has not replied
 Message 14 by contracycle, posted 03-24-2005 6:28 AM Eta_Carinae has not replied

  
JonF
Member (Idle past 168 days)
Posts: 6174
Joined: 06-23-2003


Message 7 of 22 (192760)
03-20-2005 10:03 AM
Reply to: Message 1 by btseshasayee
03-17-2005 10:05 AM


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.

This message is a reply to:
 Message 1 by btseshasayee, posted 03-17-2005 10:05 AM btseshasayee has replied

Replies to this message:
 Message 8 by btseshasayee, posted 03-20-2005 7:59 PM JonF has not replied
 Message 9 by btseshasayee, posted 03-20-2005 8:04 PM JonF has not replied

  
btseshasayee
Inactive Member


Message 8 of 22 (192879)
03-20-2005 7:59 PM
Reply to: Message 7 by JonF
03-20-2005 10:03 AM


Dear John,
Thankyou very much for understanding and clearing my misunderstanding.

This message is a reply to:
 Message 7 by JonF, posted 03-20-2005 10:03 AM JonF has not replied

  
btseshasayee
Inactive Member


Message 9 of 22 (192880)
03-20-2005 8:04 PM
Reply to: Message 7 by JonF
03-20-2005 10:03 AM


Dear John,
Thank you very much for understanding (and clearing) my misunderstanding.

This message is a reply to:
 Message 7 by JonF, posted 03-20-2005 10:03 AM JonF has not replied

  
btseshasayee
Inactive Member


Message 10 of 22 (192883)
03-20-2005 8:23 PM
Reply to: Message 6 by Eta_Carinae
03-19-2005 10:31 PM


Re: Why use the word 'must'.
Dear Eta_carinae,
Thanks for responding.My misunderstanding is cleared by Mr John.

This message is a reply to:
 Message 6 by Eta_Carinae, posted 03-19-2005 10:31 PM Eta_Carinae has not replied

Replies to this message:
 Message 11 by Jydee, posted 03-24-2005 3:44 AM btseshasayee has replied

  
Jydee
Inactive Member


Message 11 of 22 (193916)
03-24-2005 3:44 AM
Reply to: Message 10 by btseshasayee
03-20-2005 8:23 PM


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

This message is a reply to:
 Message 10 by btseshasayee, posted 03-20-2005 8:23 PM btseshasayee has replied

Replies to this message:
 Message 12 by Jydee, posted 03-24-2005 3:51 AM Jydee has replied
 Message 22 by btseshasayee, posted 03-24-2005 11:14 PM Jydee has not replied

  
Jydee
Inactive Member


Message 12 of 22 (193917)
03-24-2005 3:51 AM
Reply to: Message 11 by Jydee
03-24-2005 3:44 AM


Correction . The sentence referring to the ancent Greeks the "you"
should be replaced by they

This message is a reply to:
 Message 11 by Jydee, posted 03-24-2005 3:44 AM Jydee has replied

Replies to this message:
 Message 13 by Jydee, posted 03-24-2005 4:04 AM Jydee has not replied

  
Jydee
Inactive Member


Message 13 of 22 (193918)
03-24-2005 4:04 AM
Reply to: Message 12 by Jydee
03-24-2005 3:51 AM


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

This message is a reply to:
 Message 12 by Jydee, posted 03-24-2005 3:51 AM Jydee has not replied

  
contracycle
Inactive Member


Message 14 of 22 (193951)
03-24-2005 6:28 AM
Reply to: Message 6 by Eta_Carinae
03-19-2005 10:31 PM


Re: Why use the word 'must'.
quote:
In fact what you are saying makes no sense. Explain it more thoroughly.
I know its a radical idea, but we can just actually answer the question, you know.

This message is a reply to:
 Message 6 by Eta_Carinae, posted 03-19-2005 10:31 PM Eta_Carinae has not replied

  
contracycle
Inactive Member


Message 15 of 22 (193953)
03-24-2005 6:31 AM
Reply to: Message 1 by btseshasayee
03-17-2005 10:05 AM


quote:
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?
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.

This message is a reply to:
 Message 1 by btseshasayee, posted 03-17-2005 10:05 AM btseshasayee has not replied

Replies to this message:
 Message 17 by Jydee, posted 03-24-2005 7:49 AM contracycle has not replied

  
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