by putting the apollo discoveries in a global context, the clementine and lunar prospector measurements prompted scientists to revise their understanding of the moon and its history.
first, the authors proposed the designing process of direct soft-landing trajectory of lunar prospector and determined designing scheme;
首先根据探测器直接软着陆的特点,提出了有限推力最省燃料的最优轨道设计问题;
then, the successful application of this method to the chinese first lunar prospector mission was presented.
介绍了该方法在中国首次月球探测任务中的应用情况;
for about a decade, lunar scientists have known the moon contained a lot of hydrogen, thanks to the lunar prospector mission, but it wasn’t entirely clear what form that hydrogen was stored in.