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Plus Podcast 20, September 2009: How does gravity work?

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Plus Podcast 20, September 2009: How does gravity work?


In our fourth online poll to find out what you would most like to know about our Universe, you told us that you would like to know how gravity works. We took the question to Bangalore Sathyaprakash from the University of Cardiff, and here is his answer. You can also read the accompanying article.