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Blog post: ajb: Horizon: How small is the Universe?

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Horizon: How Small is the Universe? is on BBC Two at 21:00 BST on Monday 3 September. Or catch up afterwards via iPlayer (UK only).

 

 

 

 

 

But theoretical physicists prefer the idea that the particles are not in fact round, but tiny "strings", like bits of elastic.

Andy Parker,Cambridge University

 

 

 

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