Harmonies across the universe

There's something appealing about the idea of Music of the Spheres, that the universe follows harmonic principles. It may not apply everywhere, but one place it has been found is in the arrangement of the Solar System in Titius-Bode's law. Our guest today Tim Bovaird has been looking for this pattern among the range of extra-solar planets discovered in recent years. Guiding us along on this journey, Dr Charley Lineweaver makes a welcome return to Fuzzy Logic, and we look at his new book Complexity and the Arrow of Time, (with Paul C.W. Davis, and Michael Ruse). Interview by Rod    Twitter @SciRod