Space Exploration: Triumphs and Tragedies is part of the Information Plus Reference Series. The purpose of each volume of the series is to present the latest facts on a topic of pressing concern in modern American life. These topics include today’s most controversial and studied social issues: abortion, capital punishment, care for the elderly, crime, health care, the environment, immigration, minorities, social welfare, women, youth, and many more. Even though this series is written especially for high school and undergraduate students, it is an excellent resource for anyone in need of factual information on current affairs.
By presenting the facts, it is the intention of Gale, a part of Cengage Learning, to provide its readers with everything they need to reach an informed opinion on current issues. To that end, there is a particular emphasis in this series on the presentation of scientific studies, surveys, and statistics. These data are generally presented in the form of tables, charts, and other graphics placed within the text of each book. Every graphic is directly referred to and carefully explained in the text. The source of each graphic is presented within the graphic itself. The data used in these graphics are drawn from the most reputable and reliable sources, in particular from the various branches of the U.S. government and from major independent polling organizations. Every effort has been made to secure the most recent information available. Readers should bear in mind that many major studies take years to conduct, and that additional years often pass before the data from these studies are made available to the public. Therefore, in many cases the most recent information available in 2008 is dated from 2005 or 2006. Older statistics are sometimes presented as well, if they are of particular interest and no more-recent information exists.
Even though statistics are a major focus of the Information Plus Reference Series, they are by no means its only content. Each book also presents the widely held positions and important ideas that shape how the book’s subject is discussed in the United States. These positions are explained in detail and, where possible, in the words of their proponents. Some of the other material to be found in these books includes historical background; descriptions of major events related to the subject; relevant laws and court cases; and examples of how these issues play out in American life. Some books also feature primary documents, or have pro and con debate sections giving the words and opinions of prominent Americans on both sides of a controversial topic. All material is presented in an even-handed and unbiased manner; readers will never be encouraged to accept one view of an issue over another.
