Scientists estimate that dark matter and dark energy together are some 95% of the gravitational material in the universe while the remaining 5% is baryonic matter, which is the "normal" matter composing stars, planets and living beings. However, for decades, almost one-half of this matter has not been found. Now, using a new technique, a team including researchers from the Instituto de Astrofísica de Canarias (IAC) has shown that this "missing" baryonic matter fills the space between galaxies as hot, low-density gas. The same technique also gives a new tool that shows that the gravitational attraction experienced by galaxies is compatible with the theory of general relativity. This research is published today in three articles in the journal Monthly Notices of the Royal Astronomical Society (MNRAS).
source https://phys.org/news/2021-03-baryonic-gravity-cosmic-scales.html
