发行时间：0001.01.01
总页数：5
编辑：
综保科技
摘要：
a new road ahead for
nasa’s iconic launch infrastructure
a new dawn of spaceflight is nearing as nasa’s commercial crew program and its partners, boeing and spacex, continue development on systems that will carry up to four astronauts at a time to the international space station.
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(photo credit: nasa)
ince the apollo mission landed on the moon in 1969, nasa has led the world in space exploration efforts, highlighted by its own skylab space station, its collaboration on the intern...
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