42 U.S. Code § 17731 - Repealed. Pub. L. 111–314, § 6, Dec. 18, 2010, 124 Stat. 3444

Section, Pub. L. 110–422, title IV, § 403, Oct. 15, 2008, 122 Stat. 4789, related to stepping stone approach to exploration. See section 70504 of Title 51, National and Commercial Space Programs.