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Fraser
2011-Apr-02, 02:10 AM
The vast majority of galaxies exist in clusters. These clusters are joined on larger scales by filaments and sheets of galaxies, between which, gigantic galactic voids are nearly entirely free of galaxies. These voids are often hundreds of million of light years across. Only rarely does a lonely galaxy break the emptiness. Our own Milky [...]

More... (http://www.universetoday.com/84588/profile-of-a-lonely-galaxy/)