Scientists from the NERSC and Berkeley National Laboratory are using a supercomputer to create one of the most complete, three-dimensional maps of the adolescent universe — using extremely faint light from galaxies 10.8 billion light years away. The map shows a web of hydrogen gas that varies from low to high density at a time when the universe was made of a fraction of the dark matter we see today – just 3 billion years after the Big Bang.
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