"Contact With Space" contains the result of six years of intensive research and fieldwork. It is a work of extraordinary depth and scope, containing hitherto to
Pulitzer Prize-winning author and astronomer Carl Sagan imagines the greatest adventure of all—the discovery of an advanced civilization in the depths of spac
Frank Arntzenius presents a series of radical ideas about the structure of space and time, and establishes a new metaphysical position which holds that the fund