Book excerpt: Published by the American Geophysical Union as part of the Special Publications Series. Opening Space Research: Dreams, Technology, and Scientific Discovery is George Ludwig's account of the early development of space-based electromagnetic physics, with a focus on the first U.S. space launches and the discovery of the Van Allen radiation belts. Narrated by the person who developed many of the instruments for the early Explorer spacecraft during the 1950s and participated directly in the scientific research, it draws heavily upon the author's voluminous collection of laboratory notes and other papers, upon the Van Allen archive, and upon a wide array of other sources. This book presents very detailed discussions of historic events in a highly readable (semitechnical), first-person form. More than that, though, Opening Space Research brings to the forefront the entire team of scientists who made these accomplishments possible, providing an extensive index of names to enhance and complete the historical record. Authoritative and unique, this book will be of interest to space scientists, science historians, and anyone interested in space history and the first U.S. space launches.