America ambitions in space were always stirred by the prospect of the Soviets beating them - with new Chinese competition, the USA is putting more money and time into carrying out ambitious projects.

• 美国的太空雄心总是被苏联激起，怕苏联打败它。有了中国的竞争，美国将投入更多钱和时间，实施更多雄伟计划。