§ 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 Repealed.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.