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Tag Archive: neutral hydrogen

Sep 29 2011

A galaxy made of dark matter?

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Is this blob of hydrogen actually spinning, thus betraying all the dark matter in the vicinity, distending nearby NGC 4254? Scientists say maybe. Skeptics of the dark-matter interpretation argue that VIRGOHI21 is simply a tidal tail of the nearby galaxy NGC 4254. The observations, made with the Westerbork Synthesis Radio Telescope in the Netherlands, show …

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