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Dark matter and energy

Dark matter and energy

Correlation between galaxy rotation and visible matter puzzles astronomers

07 Oct 2016
Image of galaxy NGC 7793 taken by the Spitzer Space Telescope
Strange correlation: why is galaxy rotation defined by visible mass? (Courtesy: NASA/JPL-Caltech/R Kennicutt (University of Arizona)/SINGS legacy team)
A new study of the rotational velocities of stars in galaxies has revealed a strong correlation betw

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Keith Cooper is a science writer based in the UK
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