Discusses the exploration of Mars, focusing on the space flights made by unmanned probes, and examines possible developments and further exploration in the future.
Describes the life of the chimpanzee that was sent into space as part of the American space program, describing his capture, training, the actual flight, and his life afterwards.
Describes the activities aboard the space shuttle Discovery during its historic flight in 1998 when John Glenn, at age seventy-seven, returned to space.