NASA works from twenty centers and facilities, with its headquarters in Washington, DC
Background
The National Aeronautics and Space Administration, NASA, is the civil aeronautics and space agency of the United States.
Its own About page says NASA works at its 20 centers and facilities across the country, with NASA Headquarters in Washington, DC.
Among the centres are the Jet Propulsion Laboratory at Pasadena, the Johnson Space Center at Houston and the Kennedy Space Center, FL.
The Goddard Space Flight Center is at Greenbelt, the Marshall Space Flight Center at Huntsville, AL, and the Glenn Research Center at Cleveland, OH.
The Ames Research Center is at Moffett Field, the Langley Research Center at Hampton, VA, and the Armstrong Flight Research Center at Edwards.
Other installations include the Stennis Space Center, the Michoud Assembly Facility at New Orleans, LA, the Wallops Flight Facility, the White Sands Test Facility and the Goddard Institute for Space Studies.
NASA operates the International Space Station, which its own page calls the world's leading space laboratory.
The agency's Artemis campaign is its programme to establish an exploration presence on the Moon.
In plain words
JPL Jet Propulsion Laboratory — The NASA centre at Pasadena, listed among the agency's twenty centers and facilities.
ISS International Space Station — The orbiting laboratory operated by NASA with international partners and described on its page as the world's leading space laboratory.