Date context
Established in 1958; operations began 1 October
Legislation and the start of operations
President Dwight Eisenhower signed the National Aeronautics and Space Act on 29 July 1958. NASA began operating on 1 October that year. The date of the founding legislation and the date operations began describe separate stages of its establishment.
Inheriting aeronautical research
NASA inherited staff, laboratories and aeronautical research from the National Advisory Committee for Aeronautics, followed by selected programmes and facilities from other organizations. Its remit extended beyond human spaceflight to aviation technology and scientific investigation.
Missions and research centres
Mercury, Gemini and Apollo developed human-spaceflight capabilities, while planetary probes, space telescopes and Earth-observing missions addressed different scientific questions. Centres have different engineering and research responsibilities, and missions commonly require cooperation among several centres and outside organizations.
Organizational roles and shared results
NASA can lead a mission while instruments, spacecraft manufacture, launches and scientific analysis involve different teams. A useful account of space history preserves the relationships between programmes, centres, contractors and international partners rather than treating an agency name as the only participant.