President Dwight D. Eisenhower signed the National Aeronautics and Space Act in 1958, officially establishing NASA (National Aeronautics and Space Administration). This act created a civilian agency dedicated to the peaceful exploration of outer space, with a focus on advancing aeronautics research and development as well.

It's National Aeronautics and Space Administration.

President Dwight D. Eisenhower signed the National Aeronautics and Space Act on July 29, 1958, establishing the National Aeronautics and Space Administration (NASA). The National Advisory Committee for Aeronautics (NACA) was subsequently absorbed into NASA's operations.

The National Aeronautics and Space Administration is an executive agency.

National Aeronautics and Space Administration (NASA)