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51 U.S.C. 20103: DefinitionsText contains those laws in effect through Public Law 119-120 (October 7, 2026).
From Title 51-NATIONAL AND COMMERCIAL SPACE PROGRAMSCHAPTER 201-NATIONAL AERONAUTICS AND SPACE PROGRAM

§20103. Definitions

In this chapter:

(1)  Aeronautical and space activities.⁠—The term “aeronautical and space activities” means⁠—

(A)  research into, and the solution of, problems of flight within and outside the Earth’s atmosphere;

(B)  the development, construction, testing, and operation for research purposes of aeronautical and space vehicles;

(C)  the operation of a space transportation system including the space shuttle, upper stages, space platforms, and related equipment; and

(D)  such other activities as may be required for the exploration of space.

(2)  Aeronautical and space vehicles.⁠—The term “aeronautical and space vehicles” means aircraft, missiles, satellites, and other space vehicles, manned and unmanned, together with related equipment, devices, components, and parts.

( Pub. L. 111–314, § 3 , Dec. 18, 2010 , 124 Stat. 3332 .)

Historical and Revision Notes

Revised

Section

Source (U.S. Code)

Source (Statutes at Large)

20103

42 U.S.C. 2452.

Pub. L. 85–568, title I, § 103, July 29, 1958, 72 Stat. 427; Pub. L. 98–52, title I, § 108, July 15, 1983, 97 Stat. 285.

In paragraph (1)(A), the word “Earth’s” is capitalized for consistency in title 51.