Book excerpt: An informative, fascinating resource suitable for students, researchers, and general readers, this biographical dictionary is a "who was who" of world and space explorers, giving readers a sense of the human drama—the achievements and the challenges—that those who go where few or none have gone before must face. The explorers covered include Jacques Cousteau, Sir Vivian Fuchs, John Glenn Jr., Aleksei Leonov, Annie Peck, Valentina Tereshkova, and many more.