Subaru telescope discovers the most distant protocluster of galaxies
http://phys.org/news/2012-05-subaru-telescope-distant-protocluster-galaxies.html
The distribution of galaxies 12.7 billion years ago. White circles
represent the galaxies, and their size represents the luminosity
of the galaxies. The color contour represents the density; the
redder the color, the higher the density. The reddest region
appears in the lower part of the figure.