Astronomers have discovered a third galaxy without dark matter in a strange string of a dozen dwarf galaxies. A violent collision is likely to blame.

Source: [Live Science](https://www.livescience.com/space/not-alike-any-weve-ever-seen-before-three-of-the-12-galaxies-in-this-cosmic-string-are-missing-a-crucial-component-of-the-universe)

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