51 USC 20162
51 USC 20162
§ 20162 - Definition of upper atmosphere
CHAPTER 201— NATIONAL AERONAUTICS AND SPACE PROGRAM › SUBCHAPTER IV— UPPER ATMOSPHERE RESEARCH
In this subchapter, the term “upper atmosphere” means that portion of the Earth’s sensible atmosphere above the troposphere.
Notes
Historical and Revision Notes RevisedSectionSource (U.S. Code)Source (Statutes at Large) 2016242 U.S.C. 2482.Pub. L. 85–568, title IV, § 402, as added Pub. L. 94–39, § 8, June 19, 1975, 89 Stat. 222.