Dr Stuart Clark is author of the critically acclaimed The Sun Kings and a former editor of the UK's best-selling astronomy magazine, Astronomy Now. He currently writes for the European Space Agency and is a regular contributor to magazines such as New Scientist and BBC Focus. Dr Clark's previous books also include #10;Deep Space (Quercus 2007), Galaxy (Quercus 2008), Journey to the Stars and Universe in Focus: The Story of the Hubble Telescope.