For years, astrophysicists have been boggled by the fact that the grand sum of all the known "normal" matter in the universe -- that which makes up the stars, the Earth and even our own bodies -- only amounts to half of what should exist based on computer simulations. Given that multiple simulations have continually yielded the same result, they theorized that the rest of the normal matter, known as baryons, must be hiding somewhere in the space between galaxies. However, they haven't had much evidence to support the theory until now.
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