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From satellites to the London Olympics, all in one career

A favourite from the archive...
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Discover why the number 6174 is so mysterious.

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September 2008
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laser interferometry

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What happens when one black hole meets another? Professor Kip Thorne shows us how to eavesdrop on these cosmic events by watching for telltale gravitational waves.

Tags: gravity : interference : curvature of space : gravitational wave detector : black hole : Schwarzchild singularity : laser interferometry : Big Bang : cosmic microwave background radiation