Last of universe's missing ordinary matter

Until now, astrophysicists had only been able to locate about two-thirds of the ordinary matter. In the new research, an international team pinned down the missing third.

The Mystery of the Universe's Missing ‘Normal’ Matter Has Begun to Unravel

Previously undetected matter was found in the form of gas filaments between galaxies, which is a major step toward explaining the structure of the cosmos.