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| In Our Time
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| | | The big ideas which form the intellectual agenda of our age are illuminated by some of the best minds in the world. Melvyn Bragg and three guests investigate the history of ideas and debate their application in modern life. | | | | | LISTEN AGAIN | | | |
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| | | | | "I'm fascinated by the fact that we live in a time when so many people are doing fantastic work, and thinking in areas which it's not remotely possible for me to keep up with & and these people are prepared to talk about it. They're prepared to come on In Our Time and other programmes on Radio 4 and try and talk to the rest of us ..." |
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|  | | THE LIFE-CYCLE OF STARS
In his poem Bright Star John Keats wrote, "Bright Star, would I were steadfast as thou art". For Keats the stars were symbols of eternity- they were beautiful and ordered and unchanging - but modern astronomy tells a very different story. Stars, like everything else in the universe, are subject to change. They are born among vast swirls of gas and dust and they die in the stunning explosions we call supernovae. They create black holes and neutron stars and, in the very beginning of the universe, they forged the elements from which all life is made. But how do stars keep burning for millions of years, why do they self-destruct with such ferocity and what will happen to the universe when they all go out?
Contributors:
Paul Murdin, Senior Fellow at the Institute of Astronomy, Cambridge
Janna Levin, Advanced Fellow in Theoretical Physics in the Department of Applied Mathematics & Theoretical Physics at the University of Cambridge
Phil Charles, Professor of Astronomy at Southampton University
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