U.S. federal civilian agency with the mission of conducting research and developing operational programs in the areas of manned spaceflight; lunar, planetary, and interplanetary space probes; artificial earth-orbital satellites; rocketry; and aeronautics.

【美国】国家航空及太空总署。美国联邦政府下的一个组织，负责研发载人太空飞行、太空探测器、人造卫星、火箭及航空学。