This week Patrick and an esteemed range of biographers, scientists and astronomers discuss the life and intellectual legacy of Copernicus. Joining Patrick on the panel are: Professor Richard Tarnas, author of ‘The Passion Of The Western Mind: Understanding the Ideas That Have Shaped Our World View’, Dava Sobel, author of 'A More Perfect Heaven: How Copernicus Revolutionised the Cosmos', Dr Jim Bennett, Oxford University and David Moore, Chairman of Astronomy Ireland.