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The most distant protocluster of galaxies
Using the Subaru Telescope, a team of Japanese astronomers has discovered the most distant protocluster of galaxies ever found - one that existed less than one billion years after the Big Bang. The astronomers were able to directly observe this cluster of galaxies at an early stage in galaxy evolution, when structures were beginning to form in the early Universe. This discovery will be an important step on the way to understanding structure formation and galaxy evolution.
Objects circled in red are galaxies 12.7 billion light-years away.
Awesome news. Such structures are very faint and rare. This structure is less than 1 billion years younger than Big Bang.
http://phys.org/news/2012-05-subaru-...-galaxies.html
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...the young Universe was filled with a hot dense soup of interacting protons, electrons and photons at about 2700ºC. When the protons and electrons joined to form hydrogen atoms, the light was set free
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