posted on May, 7 2008 @ 11:28 AM
Originally posted by Buck Division
Good work. Thanks!
No problem, I understand your first skeptical reaction, since the reference and caption of the image does not tell much.
At the risk of derailing the thread a bit more, hehe, let me give some more information on the simulation and on why you may not relating it to other
large scale structure pictures.
On these simulations, the dark matter, along with the galaxies, is also often represented on the pictures, while the observed Universe structure is
only given by galaxy measurements because, well, we don't see dark matter.
While there's a strong spacial correlation between the "normal"
matter (found in galaxies and gas) and the dark matter, some differences in their distributions can be found. Which could explain the differences
between simulation pictures and galaxy distributions pictures.
The most famous galaxy distribution picture comes from the 2dF survey
. Another difference is that galaxy
distributions are often shown as spacial slices almost in 2d. But you can clearly see the same pattern: filaments, voids, regions with a high
concentration of galaxies (clusters and superclusters).
Moreover, when I say the simulation fits well with the observed Universe, I meant also quantitatively. From these maps, we can derive several
quantities related to the galaxy clustering and the mass, number and luminosity density, etc. This corroborates our most accepted theory about gravity
and dark matter (as given as input in the simulation).
[edit on 7-5-2008 by borek]