Astronomers discover another galaxy seemingly devoid of dark matter
SMRTR summary
Yale astronomers discovered DF9, a third galaxy with almost no dark matter, joining two previously found galaxies (DF2 and DF4) in the same galaxy chain. Scientists believe violent collisions between larger galaxies separated ordinary matter from dark matter, creating these rare exceptions that challenge how galaxies are thought to form.
SMRTR provides this summary for quick context. The original article belongs to Scientific American.
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