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Published online 30 May 2007 | Nature | doi:10.1038/news070528-4
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Static holes defy theory
Giant black holes create mystery by not flying out of galaxies.
Theorists predicted it would be one of the most dramatic events in the Universe: two black holes merging in a distant galaxy and then flying out of that galaxy, releasing the energy of tens of millions of Suns.
But a survey of thousands of quasars — distant, active galaxies where large black holes reside — has failed to turn up a single such 'kicked' object.
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