Published: Wed, October 11, 2017
Research | By Jo Caldwell

Mystery of the Universe's Missing Matter Finally Solved by Scientists

Mystery of the Universe's Missing Matter Finally Solved by Scientists

Scientists have been faced with this cosmological problem for many years-there is a huge imbalance between how much we see and how much our models say should be there.

The researchers found that 50 percent of the "missing" of visible matter.

Many types of research regarding the dark energy and the dark matter of the Universe has been going on, and it is not possible to observe and calculate everything about the far stretched Universe at one go or within a time limit.

However, our observations of normal matter (protons, neutrons and electrons) only account for about 2.5 percent of the universe-the rest of it is nowhere to be found. However, there is an abstruse problem of missing baryon particles. Still, these simulations too predict that entire galaxies and planets in the universe are connected by long filaments of usual matter. Two teams of researchers have now claimed to have resolved this issue.

Space- normal matter
NEW SCIENTIST The particles link galaxies together and are part of the cosmic web

The new study confirmed that the missing ordinary matter can be discovered in the form of filaments of these diffuse gasses, which link the galaxies.

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 the light travels, some of it scatters off the electrons in the gas, leaving a dim patch in the cosmic microwave background - our snapshot of the remnants from the birth of the cosmos.

Both groups found confirmation that the gas in the areas they were studying were dense enough to form filaments, "definitive" evidence they existed between the galaxies. 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.

The Milky Way and Andromeda galaxies. "Everybody sort of knows that it has to be there", said Professor Kraft, "but this is the first time that somebody - two different groups, no less - has come up with a definitive detection". "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.

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