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Filtered on: #galaxies > showing 1 comment covering 100 days


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BBC - Future - Science & Environment - Bored? Hunt for dark matter in your spare time


"Physicists believe #dark_matter exists because without its gravitational pull, #galaxies would fly apart. Yet we can't actually see the stuff because it doesn’t appear to absorb or emit light."
&AaronHolthaus 2013-11-18  


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