NASA
n. uncountablen. Stands for National Aeronautics and Space Administration. The United States government agency that explores space and studies the stars and planets. Famous for sending people to the moon and launching satellites.
n. Abbreviation for National Aeronautics and Space Administration. The United States federal agency responsible for the civil space programme, aeronautics, and space research. Typically used without an article.
NASA plans to send astronauts back to the moon soon.
Engineers at NASA are currently testing a new rocket designed for long-distance travel to Mars.
While primarily known for lunar exploration, NASA also conducts extensive Earth science research to monitor climate change and atmospheric shifts from orbital platforms.
Used as a proper noun; it does not typically take a definite article ('the') unless used as a modifier (e.g., 'the NASA budget').