Astronomy A Cosmic Debate: Do All Galaxies Have Dark Matter? The discovery of two ghostly galaxies DF2 and DF4, devoid of dark matter, has sparked a cosmic debate within the astronomical world. While the answer is still in the air, this cosmic-stir ending in an affirmation of the question can invalidate our decades-long understanding of how galaxies form and evolve. Written by Rubaa Yawar 2020-10-102020-10-10 Saving Bookmark this article Bookmarked
