German science journalist Heinz Gartmann traces the human story of astronautics through biographical portraits of the pioneers who dreamed, experimented, and built the first reaction-propelled devices. From Hermann Ganswindt to Wernher von Braun (via Tsiolkovsky, Goddard and Oberth) the book presents nine biographical chapters covering the full arc of proto-astronautics, from the late nineteenth century to the aftermath of World War II.