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Author Topic: Size of Universe answer - was it right?  (Read 2661 times)

Offline Simon Waters

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Size of Universe answer - was it right?
« on: 24/09/2010 22:01:30 »
On the 27 August show 24m in, it was suggested the Universe was 13.6 billion light years across.

My understanding is the visible Universe is already much bigger than this (92 billion light years across).

However we see distant objects red shifted such that the recession velocity (ignoring relativity) would be many times the speed of light.

I read a while back about how these distances are estimated, and what limits this places on the size of the Universe, and how much of that is visible. Can we perhaps have someone on to explain it fully.
« Last Edit: 24/09/2010 22:03:02 by Simon Waters »


 

Offline Mirkin

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Size of Universe answer - was it right?
« Reply #1 on: 31/10/2010 07:57:10 »
newbielink:http://en.wikipedia.org/wiki/Age_of_the_universe [nonactive] Might help
 

Offline PhysBang

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Size of Universe answer - was it right?
« Reply #2 on: 01/11/2010 04:52:21 »
On the 27 August show 24m in, it was suggested the Universe was 13.6 billion light years across.
Yikes! That's really far off.

OK to good answers about the size of the universe can be found at Ned Wright's Cosmology tutorial: http://www.astro.ucla.edu/~wright/cosmolog.htm
 

The Naked Scientists Forum

Size of Universe answer - was it right?
« Reply #2 on: 01/11/2010 04:52:21 »

 

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