A new study has substantiated a debatable claim made in 2018 that few galaxies entirely lack the dark matter. The research was conducted by a team directed by Pieter van Dokkum of Yale University—the one initially claimed the absence of dark matter last year in March.
The claim concerned examinations of a galaxy called NGC 1052-DF2—that primarily came to the attention of van Dokkum in the previous year. Utilizing the Keck Observatory in Hawaii, van Dokkum and his team observed something strange about the manner in which the globular clusters including the galaxy were stirring.
They discovered a strangely huge population of globe-shaped clusters, globular clusters, of usually between 100,000 and 1 million stars. They were moving at speeds that proposed the galaxy’s total mass was equivalent to that only of its detectable matter elements. Dark matter—that is, as the name proposes, invisible—is recognized to cover the vast majority of the universe’s mass. If it exists in NGC 1052-DF2, all would have been stirring much quicker.
The conclusion was apparently inevitable: the galaxy comprised no dark matter at all—a state deemed to be impossible. The researchers mentioned, “With this corroboration of the NGC1052-DF2’slow-velocity dispersion, the most urgent query is whether this ‘missing dark matter issue’ is exclusive to this galaxy or implements more widely.”
On a similar note, the researchers from the Massachusetts Institute of Technology (MIT) and several other institutions have found no proof of the theoretical particle axion in the foremost execution of the ABRACADABRA experiment that took place in July and August months of last year. In recent years, the scientists have been attempting to find out the particles that compose dark matter—the strange form of matter deemed to account for around 85% of the entire mass in the acknowledged universe.