Universe In A Box

Universe In A Box. Yum.

A hypothetical universe. The picture shows a computer's guess of how gas in the universe was distributed billions of years ago, at redshift 3, when the universe was only a quarter of its present age. This hypothetical universe was reconstructed by the GC3 team (Grand Challenge Cosmology Consortium) using supercomputers at the National Center for Supercomputing Applications. A cube of this universe was cut out and is displayed here, with each side being about 8 million light-years across. The colors represent varying temperatures of the hot gas. At the bottom, a single slice through this cube is displayed, with helium abundance superposed with a wire mesh. The small structures appearing here give insight into the past and present structure of the intergalactic medium, the matter inhabiting the regions between galaxies and clusters of galaxies.

w.wu 2000-2005