There have been at least two cases of rebellion by astronaut crews in the history of space exploration. The first happened in 1968 during the Apollo 7 mission. Commander Wally Schirra had come down with a cold and fever, and his congested sinuses led him to ignore the reentry protocol. Schirra and the crew chose not to wear their helmets, fearing ruptured eardrums due to the pressure change. The second incident happened during the Skylab 4 mission (1973-1974), which was the final tour aboard the...