他们向人们演讲有关航空和宇宙航行空间的最新观点，并回答听众提的问题。
They give talks about the newest ideas in aerospace and answer questions from the audience.
谢泼德的成功飞行引起人们对空间计划的浪潮般的兴趣和热情，并且美国国家航空和宇宙航行局也从这次成功完成的任务中获得了许多好处。
Shepard's successful flight created a wave of interest and enthusiasm in the space program and NASA reaped the benefits of a successful mission.
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