Titans of Science is back with John Zarnecki, a towering figure in the UK's space community. He has played a crucial role in designing instruments for groundbreaking space missions, and has also helped shape Europe's planetary science programme. In this episode, John shares compelling stories from his career with Chris Smith - including the significance of the Cassini-Huygens mission to Titan, the value of the Hubble Space Telescope, and his early work on rockets in Australia... Like this podcast? Please help us by supporting the Naked Scientists