LONDON — A rare astronomy tool that helped medieval scientists tell time will remain in Britain after the British Museum scrambled to come up with the money to buy it. The brass device, called an ...

Foreword; Preface; Contents; Chapter-1; The Origins of Astronomy; Human Experience of the Sky; Figures in the Sky: The Constellations; The Ancients' Astronomy; Chapter-2; The Babylonians; The ...