The confirmed lack of dark matter was identified by NASA’s Hubble Space Telescope in the Ultra Wide Galaxy (UDG), according to the PhysOrg Science Education portal.
The distance to the galaxy NGC1052-DF2 (DF2) has been determined more precisely than ever before by an international research team led by Zile Shen and Peter van Dokkum, researchers at Yale University, and Shani Daniele, a NASA fellow.
“Accurate determination of the distance is crucial in estimating the physical properties of the galaxy and thus in determining the absence of dark matter.”
The study, presented in the scientific journal Astrophysical Journal Letters, is based on data from 40 orbits made by the Hubble Space Telescope.
The findings confirm the researchers’ findings for 2018.
“I think people have rightly wondered because it’s a very unusual result. It would be nice to have a simple explanation, like measuring the distance badly. But I think it’s fun and more interesting that it’s a really strange galaxy.”
Van Dokkum said.
Much of the universe consists of mysterious dark matter that researchers have not yet been able to prove directly, and only indirect evidence of its existence has been found.
This material supposedly keeps galaxies together by giving them extra mass that would otherwise fly away due to their rotational motion.
Dark matter is probably five times more common than ordinary matter, but it does not emit detectable light or radiation, and only its own gravitational effect can be detected. Researchers say they make up 27% of the universe. There is no good explanation for how and why there is no dark matter in the galaxy NGC1052-DF2 in the northern constellation Cet.
Cover image illustration.