据美国航宇局约翰逊空间中心科学家和工程师小组称，美国将用２０～３０亿美元于２００１年把航天员再次送到月球上去。虽然这一经费大大地低于“阿波罗”飞行的费用，但是美国航宇局局长戈尔丁，还是要求该小组制定一项几百万美元而不是几十亿美元的登月飞行计划。戈尔丁... According to a team of scientists and engineers at the NASA Johnson Space Center, the United States will send astronauts to the moon again in 2001 for 2-3 billion U.S. dollars. Although this funding was significantly lower than the cost of Apollo flights, Goldin, NASA director, still demanded that the team develop a multi-million-dollar flight instead of multi-billion-dollar lunar missions. Golding