Colin StuartColin Stuart is an astronomy author and speaker who has talked to half a million people about the universe. His books have sold more than 400,000 copies worldwide and been translated into 21 languages. He's written 200+ popular science articlefor The Guardian, Wall Street Journal, New Scientist and the European Space Agency among others. He is also a fellow of the Royal Astronomical Society and he's talked about the wonders of the universe on Sky News, BBC News and Radio 5Live. Read More Read Less