3.4.2 Next Generation Air Transportation System (2007–present).3.3.4 Launch Services Program (1990–present).3.3.3 Sounding Rocket Program (1959–present).

3.3.2 Near Space Network (1983–present).

3.3.1 Deep Space Network (1963–present).

3.2.4 Earth Sciences Program Missions (1965–present).

3.1.5 Commercial LEO Development (2021–present).

3.1.3 Commercial Crew Program (2011–present).

3.1.2 Commercial Resupply Services (2008–present).

3.1.1 International Space Station (1993–present).NASA's science is focused on better understanding Earth through the Earth Observing System advancing heliophysics through the efforts of the Science Mission Directorate's Heliophysics Research Program exploring bodies throughout the Solar System with advanced robotic spacecraft such as New Horizons and researching astrophysics topics, such as the Big Bang, through the Great Observatories and associated programs. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management for uncrewed NASA launches. NASA supports the International Space Station and oversees the development of the Orion spacecraft, the Space Launch System, Commercial Crew vehicles, and the planned Lunar Gateway space station. Since its establishment, most American space exploration efforts have been led by NASA, including the Apollo Moon landing missions, the Skylab space station, and later the Space Shuttle.

space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. The National Aeronautics and Space Administration ( NASA / ˈ n æ s ə/) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research.

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