So it sounds like during the expansion phase a lightyear was still a
lightyear but growing bigger? If you were there how would you tell? My
platinum standard meter bar is now a longer but still standard meter
bar? Has time dilated as well? If so what does the age of 13.5by
mean? In what dimensions could you measure these changes? [Confusion
may be an understatement.]
Robert C
On 10/24/13 10:12 PM, Roger Critchlow wrote:
http://en.wikipedia.org/wiki/Metric_expansion_of_space:
"Because of the changing rate of expansion, it is also possible for a
distance to exceed the value calculated by multiplying the speed of
light by the age of the universe. These details are a frequent source
of confusion among amateurs and even professional physicists."
-- rec --
On Thu, Oct 24, 2013 at 10:08 PM, Robert J. Cordingley
<[email protected] <mailto:[email protected]>> wrote:
Regardless of the poetic 'outer edges' is it possible what might
be meant is in the context of a hyperspherical universe where the
radius is time and is 13.5 by? The center being when the big bang
occurred. Then the furthest object would be diametrically
opposite and hypercircumferentially at 13.5*pi bly or 42.4 bly
away? So in the 'now' being at 30bly away is chicken feed.
Robert C.
On 10/24/13 9:20 PM, Roger Critchlow wrote:
Where is "the outer edge of the Universe" and what sort of
observation would locate something there? All that the original
report in Nature established was redshift (7.51), age (700 Myr
after the Big Bang), and a surprising rate of star formation (330
solar masses / year).
-- rec --
> > > From the BBC at
http://www.bbc.co.uk/news/science-environment-24637890
> > > (today)
> > >
> > > /Because it takes light so long to travel from the
outer edge of the
> > > Universe to us, the galaxy appears as it was 13.1
billion years ago (its
> > > distance from Earth of 30 billion light-years is
because the Universe is
> > > expanding)./
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