Galaxies without dark matter are unfeasible to recognize in the structure of the present theory of formation for the galaxy. This is due to the fact that the role of dark matter is primary in causing the gas collapse to make stars. In 2018, a research posted in Nature declared the foundation of a galaxy that fell short of dark matter, which made a solid impact and occupied the popular scientific magazines; covers.
Now, as per an article posted in the MNRAS (Monthly Notices of the Royal Astronomical Society) a team of scientists at the IAC (Instituto de Astrofísica de Canarias) has solved this mystery through a very inclusive set of observations of NGC1052-DF2 (KKS2000]04), earlier named as “the galaxy with no dark matter.”
In this research, the scientists (perplexed because all the factors that relied on the distance of the galaxy were irregular) have mended the obtainable distance indicators. Employing 5 independent approaches to predict the distance of the object they discovered that all of them coincided in one result: the galaxy is much closer as compared to the value shown in the earlier study.
The initial article posted in Nature claimed that the galaxy is at a distance of some 64 Million Light Years from our planet. On the other hand, this new study has disclosed that the actual distance is much less, almost 42 Million Light Years.
On a related note, a group spearheaded by scientists of the Besançon Astronomical Observatory and the ICCUB, UB-IEEC (Institute of Cosmos Sciences of the University of Barcelona) have discovered (by analyzing info from the Gaia satellite) that a severe star creation burst took place in our galaxy almost 2–3 Billion Years back. In this procedure, over 50% of the stars that formed the galactic disc might have been born.