Dr. Buzz Aldrin was watched by the largest television audience in history as he and Neil Armstrong be-came the first humans to walk on the Moon. He is a graduate of the Massachusetts Institute of Technology, a recipient of the Presidential Medal of Freedom, and one of the world's best-known advocates for the exploration of outer space. He lives in Los Angeles.

John Barnes is the award-winning author of many Science Fiction novels, including Orbital Resonance, A Million Open Doors, and The Sky So Big and Black. With Buzz Aldrin, he wrote Encounter with Tiber and The Return. He lives in Colorado.