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  Monsters in the dark

  

  aeon.co

  The Universe's biggest galaxies could hold the key to the birth of the cosmos. Why are these behemoths so hard to find?By Matthew BothwellRead at Aeon

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• Black Holes | Science Mission Directorate

  

  nasa.gov

  hundreds of millions

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  Hubble Detects Smallest Known Dark Matter Clumps

  

  hubblesite.org

  Hubble has detected the smallest clumps of Dark Matter yet seen

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  The Hubble constant: a mystery that keeps getting bigger

  

  theguardian.com

  Scientists have found a discrepancy in estimates for the rate of expansion of the universe. Why...

  Scientists have found a discrepancy in estimates for the rate of expansion of the universe. Why is this and what does it mean?Astronomers have reached a fundamental impasse in their understanding of the universe: they cannot agree how fast it is flying apart. And unless a reasonable explanation can be found for their differing estimates, they may be forced to completely rethink their ideas...

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