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Janna Levin: The sound the universe makes


Janna Levin: The sound the universe makes
Janna Levin: The sound the universe makes
Duration: 17:43

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.