肯尼迪总统授予艾伦·谢泼德美国航空航天局杰出服务勋章
On May 5, 1961, Alan Shepard – one of NASA’s first seven astronauts – became the first American in space. In this image…
NAS的历史
On May 5, 1961, Alan Shepard – one of NASA’s first seven astronauts – became the first American in space. In this image…