Astronomers found a third galaxy with almost no dark matter, and all three sit on the same straight line — pointing to a collision that tore ordinary matter loose

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The stars inside a faint galaxy called DF9 drift so slowly that its whole mass matches its visible stars alone. It is the third dark-matter-poor galaxy found strung along one narrow trail in the same patch of sky. The post Astronomers found a third galaxy with almost no dark matter, and all three sit on the same straight line — pointing to a collision that tore ordinary matter loose appeared first on Space Daily .