Speaking of warm moist air, the Apollo command module used pure oxygen at about 5 PSI. The Soyuz used a nitrogen and oxygen mix at a comfortable sea-level pressure of 15 PSI. The ASTP design was ...

Slayton made his first space flight in 1975 as the Apollo docking module pilot of the Apollo-Soyuz Test Project (ASTP) mission. Donald "Deke" Slayton was one of the original Mercury 7 astronauts ...