title: Human element in long-duration spaceflight. Special section.
mesh_terms: D000337:Aerospace Medicine; D018480:Astronauts / Q000193:education / Q000523:psychology*; D006804:Ergonomics; D006126:Group Processes; D006801:Humans; D013026:Space Flight / Q000458:organization & administration* / Q000639:trends; D018561:Space Simulation