抽象的
NASA aims to travel the moon again and on the far side. Hereâ??s a glance at the 21st-century race to send humans into area
Barba Rossi
Private spacefaring isn't a brand new construct. Within the U.S. industrial corporations vie a job within the region business right from the start: Since the Nineteen Sixties, independent agency has relied on non-public contractors to make space vehicle for each major human spacefaring program, beginning with Project Mercury and continued till this.
免责声明: 此摘要通过人工智能工具翻译,尚未经过审核或验证