title: Physical and psychological challenges of space travel: an overview.
authors.forename: M G
authors.initials: MG
authors.lastname: Ziegler
authors.forename: J V
authors.initials: JV
authors.lastname: Meck
mesh_terms: D000222:Adaptation, Physiological; D006304:Health Status; D006801:Humans; D009325:Nausea / Q000523:psychology*; D010146:Pain / Q000523:psychology*; D011187:Posture; D013026:Space Flight; D013997:Time Factors; D014195:Travel; D014893:Weightlessness