Marcus Chown is an award-winning writer and broadcaster. Formerly a radio astronomer at the California Institute of Technology, he is a Royal Literary Fund Fellow at Brunel University. His numerous books include The Ascent of Gravity, a Sunday Times Science Book of the Year; Breakthrough; Infinity in the Palm of Your Hand; What a Wonderful World; Quantum Theory Cannot Hurt You; We Need to Talk to Kelvin; and Afterglow of Creation. He won The Bookseller Digital Innovation of the Year Award for "Solar System for iPad," for which he wrote the text. He lives in London, England.