From Chinese rockets of the 11th century to the latest developments in modern space travel, the four-volume "Space Exploration Reference Library provides a wealth of information on this still-emerging science."Space Exploration Reference Library: Almanac covers the space race, the Moon landings, joint U.S. and Russian space ventures, space equipment, the history of space probes and more. "Space Exploration Reference Library: Biographies examines key figures like Sally Ride, Yuri A. Gagarin, Neil Armstrong, John H. Glenn, Jr., Arlette Vassy, Herman Oberth and many others. "Space Exploration Reference Library: Primary Sources includes a wide-range of full and excerpted sources concerning the political, economic and scientific aspects of space exploration.