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SNU team finds 142 dark galaxy candidates and challenges galaxy formation theory

dongascience.com

An SNU team found 142 galaxies made almost entirely of dark matter — with barely any stars — and that shouldn't exist under the standard model of galaxy formation.

Lambda-CDM ModelDark Matter Halo TheoryGalaxy Formation TheoryGravitational Collapse
SNU team finds 142 dark galaxy candidates and challenges galaxy formation theory

Theory Briefing

  • The standard model says gas falling into dark matter halos must condense into stars, but these 142 candidates appear to have skipped that step entirely.
  • Seoul National University researchers identified the dark galaxy candidates, a find that directly challenges the leading framework for how galaxies are born.
  • If confirmed, these near-starless structures suggest dark matter can form stable galactic-scale objects without the star-forming process scientists assumed was inevitable.