POV-Ray : Newsgroups : povray.off-topic : Did you know... : Re: Did you know... Server Time
11 Oct 2024 13:15:12 EDT (-0400)
  Re: Did you know...  
From: Patrick Elliott
Date: 3 Jan 2008 15:26:07
Message: <MPG.21e6f2c79e211fd98a0d5@news.povray.org>
In article <477d1268$1@news.povray.org>, ele### [at] netscapenet 
says...
> Darren New nous apporta ses lumieres en ce 2008/01/02 21:48:
> > Warp wrote:
> >>   Galaxies do not expand because their gravity keeps them in shape. In
> >> other words, gravity inside (and near) galaxies is strong enough to
> >> "resist" the expansion. Consequently nothing inside galaxies expands.
> > 
> > Hmmmm.... I'll take this idea with a grain of salt. :-)
> > 
> >>   Another slightly difficult thing to grasp is that a constant expansi
on
> >> of the universe actually means that galaxies recede from us at an 
> >> exponential
> >> rate. At each certain unit of time space distances double, which means
 
> >> that
> >> the distance between two galaxies grows exponentially with time. 
> > 
> > Yet, funny enough, the number of galaxies we see in an area is constant
 
> > for a given volume, or close to it. This implies that perhaps the 
> > galaxies aren't receding at all, and space isn't growing at all.
> It is NOT constant! There are several regions in space that don't have an
y 
> galaxies for 100's of millions of light-years in any direction, and some 
where 
> galaxies are clustered toggether with average distances around a few 1000
0's 
> light-years. Our galaxy is around 27000 light years across.
> You have galaxies clusters, then super clusters and mega clusters. You ha
ve 
> galaxies "filaments", literaly very long strings of galaxies and galaxies
 
> clusters stretching for billions of light-years.
> > 
And at least one recently discovered region that is completely "black" 
in the sense that there are no stars, gases, etc. in it, but where light 
seems to instead "slow down" as it passes through, rather than speeding 
up, via gravitational shifts. So, yeah, hardly "constant". lol

-- 
void main () {

    if version = "Vista" {
      call slow_by_half();
      call DRM_everything();
    }
    call functional_code();
  }
  else
    call crash_windows();
}

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