Soyuz 4 and Soyuz 5, both Soviet space craft, docked and conducted the first transfer of crew members in space in 1969. The transfer actually happened through a space walk. The transfer was successful, but the return of Soyuz 5 was truly amazing. The cosmonaut in Soyuz 5 barely survived a landing that would make a great movie. Idea: The children could research the problems of space docking and returning to earth.