Marcus Chown is an award-winning writer and broadcaster. Formerly a radio astronomer at the California Institute of Technology in Pasadena, he is currently cosmology consultant of the weekly science magazine New Scientist.

His most recent book is We Need to Talk About Kelvin. Previous titles include Quantum Theory Cannot Hurt You, of which The Times said ‘readers will experience happy eureka moments,’ The Never-Ending Days of Being Dead, which was called ‘a limousine among popular science vehicles’ by the Guardian, ‘a masterpiece’ by Astronomy Now, and described as ‘like being at a party … with an almost perfect DJ’ in the Independent. Marcus Chown has also written a work for children, Felicity Frobisher and the Three-Headed Aldebaran Dust Devil.