The old saying “we are dust of stars” has penetrated so deeply into our minds that we risk losing some of its poetry. Yes, elements heavier than hydrogen and helium in the earth’s environment have been forged by various ancient life cycles of generations of stars. Many of these cosmic furnaces have expelled their contents into the void, polluting our galaxy with traces of atomic nuclei that we call oxygen, carbon, iron and more. And in the course of the eons gravity has caused the re-condensation of this interstellar matter. As a result, the elements were separated, allowing star matter to become extraordinarily concentrated, creating new stars, planets, and clusters of heavy nuclei that make up human beings and their absurd complexity.
Di Paolo and his collaborators wanted to verify this relationship, analyzing the rotation curves of galaxies different from the “classic” spirals: 72 galaxies with low surface brightness (LSB) and 34
dwarf disk galaxies. They produced more extensive results, finding a relationship that, in addition to the total gravitational acceleration and its ordinary component, also involves the galactic radius and the morphology of the galaxies.
“We have studied the relationship between total acceleration and its ordinary component in 106 galaxies, obtaining different results than previously observed,” explains Paolo Salucci, professor of astrophysics at SISSA and among the authors of the research. “This not only demonstrates the inaccuracy of the previously described empirical relationship but eliminates doubts about the existence of dark matter in galaxies. Furthermore, the new report found could provide crucial information for understanding the nature of this indefinite component “.