title: Space exploration: where 24 men have gone before.
authors.forename: Geoff
authors.initials: G
authors.lastname: Brumfiel
mesh_terms: D018480:Astronauts / Q000191:economics / Q000266:history* / Q000639:trends*; D002017:Budgets; D035082:Federal Government; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D016081:Moon; D013026:Space Flight / Q000191:economics / Q000266:history* / Q000639:trends*; D018531:Spacecraft / Q000191:economics / Q000266:history / Q000295:instrumentation / Q000592:standards; D013997:Time Factors; D014481:United States; D018557:United States National Aeronautics and Space Administration / Q000191:economics / Q000266:history* / Q000639:trends*