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Janna Levin: The sound the universe makes

posted Mar 27, 2011, 10:11 AM by Farhad Abtahi   [ updated Mar 27, 2011, 10:15 AM ]
We think of space as a silent place. But physicist Janna Levin says the universe has a soundtrack -- a sonic composition that records some of the most dramatic events in outer space. (Black holes, for instance, bang on spacetime like a drum.) An accessible and mind-expanding soundwalk through the universe