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The Violent Lives of Galaxies
April 28, 2008 | NASA Hubble Space Telescope

“Astronomers are using NASA’s Hubble Space Telescope to dissect one of the largest structures in the universe as part of a quest to understand the violent lives of galaxies. Hubble is providing indirect evidence of unseen dark matter tugging on galaxies in the crowded, rough-and-tumble environment of a massive supercluster of hundreds of galaxies.” Quoted from the NASA release.


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