title: Reversible exploration not worth the cost.
authors.forename: Samuel C
authors.initials: SC
authors.lastname: Schon
mesh_terms: D003362:Cost-Benefit Analysis; D005118:Extraterrestrial Environment; D006801:Humans; D018535:Mars; D013026:Space Flight / Q000191:economics*; D018531:Spacecraft; D013242:Sterilization