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遨游太空,是人类长久以来的梦想。但实际上,我们早已进入“太空时代”。1957年10月4日,俄罗斯第一颗人造地球卫星的发射,标志着“第一太空时代”的到来,这一时代随着航天飞机在2010年完成最后一次飞行而宣告结束。“第二太空时代”始于2004年12月,美国国家航空和航天局公布了“征服宇宙计划:第二太空时代行动方案与第三太空时代宇宙方舟计划”。第二太空时代行动方案是美国人将于2020年再次在月球上进行太空行走,并于2037年首次在火星
Traveling in space is a long-cherished dream of mankind. But in fact, we have already entered “space age”. The launch of Russia’s first man-made earth satellite on October 4, 1957, marked the arrival of “First Space Age”, an era that ended when the space shuttle completed its final flight in 2010. “Second Space Age ” began in December 2004, the United States National Aeronautics and Space Administration announced “conquering the universe plan: the second space age action program and the third space age universe ark plan ”. The Second Space Age Action Plan is that Americans will once again make spacewalks on the moon by 2020 and will, for the first time,