Book excerpt: The Lord of Uraniborg is a comprehensive biography of Tycho Brahe, father of modern astronomy, famed alchemist and littérateur of the sixteenth-century Danish Renaissance. Written in a lively and engaging style, Victor Thoren's biography offers interesting perspectives on Tycho's life and presents alternative analyses of virtually every aspect of his scientific work. A range of readers interested in astronomy, history of astronomy and the history of science will find this book fascinating.