 He has written more than 40 books, many in collaboration with Heather Couper, and over 1,000 articles on astronomy and space which have been translated into 27 languages.Previously he has been Astronomy Consultant to "New Scientist" magazine, editor of the "Journal of the British Astronomical Association" and media consultant to the Royal Greenwich Observatory.Along with Couper and Stuart Carter, director of the Channel 4 series "The Stars", he set up Pioneer Productions where he produced award-winning television programmes and series.