Peter Harman is Professor of the History of Science at Lancaster University. At Cambridge he lectured in the history of science and was a Research Fellow of Clare Hall. He has written several books published by Cambridge University Press.

Simon Mitton is a Fellow of St Edmund's College, Cambridge, and was the astronomy publisher at Cambridge University Press for twenty years. He is the author or editor of several books on astronomy and the history of science, including Cambridge Scientific Minds (Cambridge University Press, 2000). The International Astronomical Union designated an asteroid as Mitton 4027 in recognition of the achievements of Simon and his wife Dr Jacqueline Mitton in popularising astronomy through book writing.