Two teams of researchers have now claimed to have resolved this issue. Baryonic matter - part of what we contemplate "normal matter" in the universe -constitutes everything we are accustomed with, the stars, planets, the chair you are sitting on, the device you are using to read this, and you.
Scientists have discovered the location of the universe's missing matter - the half of ordinary matter that could not be previously observed, but which scientists knew to exist.
The teams' work focused on the universe's ordinary matter, matter composed of protons, neutrons and electrons, as opposed to mysterious dark matter, which make up most of the known universe.
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The community of scientist has always been hunting for a link to the missing matter of universe that is mysterious thing throughout the planet and gravitational pull.
The scientists analyzed data obtained by the orbiting observatory Planck, created to study the cosmic microwave background (CMB), which remained after the Universe became transparent to thermal radiation. As this light moves through hot gas, some of it scatters, leaving a patch in the CMB.
The missing links between galaxies have finally been found. Furthermore, they found the matter was far denser than average-in Tanimura's paper it was up to three times denser, while in Graaf's paper it was as much as six. Because the tendrils of gas between galaxies are so diffuse, the dim blotches they cause are far too slight to be seen directly on Planck's map.
"The missing baryon problem is solved", says Hideki Tanimura at the Institute of Space Astrophysics in Orsay, France, leader of one of the groups. "We expect some differences [between the density] because we are looking at filaments at different distances".
The Milky Way and Andromeda galaxies. To study with a simulated structure, goes exactly in a way of the dark matter. "This goes a long way toward showing that many of our ideas of how galaxies form and how structures form over the history of the universe are pretty much correct", said Ralph Kraft, a professor at Harvard-Smithsonian Center for Astrophysics in MA.