New Candidate Particles For Dark Matter Are So Dense They Are Almost Miniature Black Holes

Physics





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They have the mass of 10 billion billion protons. Jurik Peter/Shutterstock

Dark matter comprises up to five-sixths of the total matter in the universe, binding much of it together. Despite its commonality, the physical nature of dark matter, as of 2016, remains elusive, with its dramatic effects only indirectly seen.