... web. Until about thirty years ago, astronomers thought that the Universe was composed almost entirely of "baryonic matter" – ordinary atoms made up of protons, neutrons and electrons. But, after calculating the density and composition of the...
... structure of the cosmic microwave background, the large scale structure of galaxy clusters, along with the distribution of baryonic matter (lighter elements such as hydrogen, helium, lithium and oxygen) in the Universe. One problem with the amount...
... that 95 percent of the Universe is composed of dark energy and dark matter and only around five percent is ‘baryonic matter’ or normal matter, since its constituents are atoms. Baryons make up objects of everyday life, however only 50 percent are...
...Karukes. "Our observations, however, disagree with this notion." Non-baryonic matter are particles such as electrons or neutrinos, which are classed as leptons. Baryonic matter on the other hand is made up of particles found in an atomic nuclei, such...
... oscillations (BAO), which are regular, periodic fluctuations in the density of the visible baryonic matter (normal matter such as protons and electrons) of the Universe. These oscillations are analogous to sound waves created in air by pressure...
... particles such as protons and neutrons like normal baryonic matter. It is thought that WIMPs were created in... in a way that will never be able to reveal them. Maybe dark matter is of a different character and needs to be looked for in a different...