The National Aeronautics and Space Administration (NASA/ˈn sə/) is a free organization of the US central government liable for the common space program, flying examination, and space research.
NASA's science is centered around better comprehension of Earth through the Earth Observing System; progressing heliophysics through the endeavors of the Science Mission Directorate's Heliophysics Research Program; investigating bodies all through the Solar System with cutting-edge mechanical rockets like New Horizons; and exploring astronomy points, like the Big Bang, through the Great Observatories and related programs.