29 January 2016
Vol 351, Issue 6272

About The Cover

Cover image expansion

COVER Replica of a Babylonian tablet (circa 350–150 BCE), which describes the motion of Jupiter (upper left). The tablet is part of the first known use of geometric methods in Babylonian mathematical astronomy, which was previously thought to operate exclusively with arithmetical concepts. See pages 435 and 482. For more on the process behind creating the tablet replica and cover image, see
Photo: © David Sharpe; Tablet: © The Trustees of the British Museum All Rights Reserved; Starfield: © Babak Tafreshi/Corbis All Rights Reserved