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Ursa Major III: Hidden Black Holes Challenge Dark Matter Theory

8/20/2025

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Story summary
  • Ursa Major III, located over 30,000 light-years away, may consist of hidden black holes instead of dark matter.
  • Research from the University of Bonn indicates it is a compact star cluster supported by black holes and neutron stars.
  • This finding contradicts earlier views of it as a dark dwarf galaxy.
  • The study enhances understanding of the Milky Way's formation.