Gravity is everywhere. We and every other thing in the cosmos experience its force at all times no matter how small, no matter how oblivious you might be to its presence - it's there. But for something that causes the falling of a leaf in autumn as well as the collision of supermassive black holes in interstellar space - there’s a whole lot we don’t know about it too. Claudia de Rham, Professor of Theoretical Physics at Imperial College London joined Jonathan to run through everything we don’t know about gravity. Listen and subscribe to Futureproof with Jonathan McCrea on Apple Podcasts and Spotify. Download, listen and subscribe on the Newstalk App. You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.

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