The title of the above Tom Corbett mystery is DANGER IN DEEP SPACE. What are the dangers of deep space? No astronauts have journeyed beyond the Earth's moon since the advent of manned space exploration in the early 1960s. The missions which could be classified as "deep space" with regard to the Earth's spacefaring nations would be those of the Apollo lunar landing program. Among these, Apollo 13 stands above the rest as illustrating the dangers of deep space. For a review of those dangers and the Apollo 13 rescue click here.