为了进一步扩展航天飞机的应用范围,美国宇航专家们提出了许多富有想像力的设想。其中一种就是从在轨道中飞行的航天飞机上用一根极长的绳子拴着卫星,象放风筝一样把它投放到更高的轨道上,或象放钓鱼钩一样把它下沉到地球高层大气层之中,用以进行一些特殊的科学研 To further expand the space shuttle’s applications, many U.S. aerospace experts have come up with many imaginative ideas. One of them is to hang a satellite from a space shuttle flying in orbit, put it on a higher track like a kite, or sink it to the earth like a fishing hook High-level atmosphere, for some special scientific research